Super good! One of the best I-Mac tutorials ever! I agree It is better than iFixit. You got it down and done right! Thank you very much! Got any ideas about CUP replacement for Imac 21.5 Mid 2010?
Do you know if the SATA cable for the hard drive can be replaced without having to remove the motherboard? If I just removed the fan on the right side and superdrive can the SATA cable be reached and removed? From what I understand if you have one of the Dual Core Intel CPUs then you are able upgrade the CPU.
@@LordToxygene I have the dual core inside my old iMac 21" 2009; I'm still searching for logic boards with modern CPUs that can support the Mac; so that I can use the latest OSX on it. 😄
I have been fixing Windows based laptops and MacBook Pros for a few years but never tackled an iMac. I picked up an 09 for 75 bucks and followed your great video. I found a logic board for 49 bucks. Took my time and everything works fantastic. Thank you for your great instructions.
My 21.5 mid 2011 iMac went completely dead and would not power up at all. I took it to the Apple store and was told it might be the power supply. As it turned out, they told me the logic board is bad and would cost $650.00 to replace. I found a replacement board for $30.00, followed your video instructions and just wanted to say thanks. Great directions that saved me a ton of money. Best tutorial I've seen!
Thanks for the simple and easy to follow video! SEEKING ADVICE! I found a late 2009 iMac 21" at the recycling center in my town. I originally just wanted the RAM cards from it, considering I do not know how to repair computers at all. When I got it home, I tried starting it up, but I got nothing. Although it didn't rain, there was probably some condensation/water damage that occurred. Did a few google searches and went down that rabbit hole. One LED diagnostic light remains on. I removed the logic board thanks to this video, and the coin battery on the back does seem a bit corroded. I'm thinking the slight corrosion on the coin battery is an indication of other areas that may be damaged. And say I go ahead, and order a new logic board, I'm not even sure if that was the problem in the first place. It was fun to pull this apart and learn a bit, but the RAM cards is enough of a victory for me. It's just seems like such a shame to throw away such a beautiful looking iMac. Asking this question is really my final attempt at wondering if I should dive any deeper here, but does anyone have an idea if this is a logic board issue, or if I should just chuck this and save the RAM??
If you have one diagnostic light on that means the logic board is most likely fine and all you have to do is replace the power supply. Some thing like this www.ebay.com/itm/Apple-iMac-21-5-A1311-2009-2010-2011-205W-Power-Supply-661-5299-614-0445-/262628800550?hash=item3d25e57826:g:E6EAAOSwB09YIGZ~ My bet is that will fix it.
Our 2011 iMac would not start up so we took it to a reputable Mac shop. Apple repair shop diagnosed bad logic board. They tried a new video card in the shop and that did not work. So, we personally ordered a new logic board online and installed it by following your EXCELLENt video. The main thing different about our computer was a big metal flag-shaped part that we transferred to the new logic board (the silver "flag" portion was just above the CD ROM drive.) We also had two more cables than you to connect on the back side of the logic board. Now, we can hear the proper start-up tone but the screen remains black and then the fan kicks on within a minute. We are able to press esc. on the keyboard and it beeps and we can control the volume of that beep via volume controls on keyboard. Seems like we have made progress since the startup sound did not previously occur before we installed the new logic board. We tried safe boot and the response was the same as noted above. Any chance we just didn't hook up the screen properly? Suggestions? We want to keep this computer because we put a solid state drive in this year as well as additional RAM. It has also had video card replaced in the past. thank you
Ok so sounds like one of the following has a connection issue/broken or wrong part for the logicboard replacement, 1. LCD Inverter board, 2. LCD Panel, 3. Graphics card Unit (some imacs for onboard graphics so no card). If it's not a simple issue like the power cables behind the lcd are not plugged in correctly then I would start replacing those parts the that order.
Thanks for your video. I successfully replaced the logic board. I recommend attaching stickers to wires and labeling or taking photos so it’s easy to put back in reverse. I drew a schematic for the screws and this sped everything up. I had to look at photos because I also forgot what side logic board went and what order screen and frame go on.
One simple safety measure, that nobody shows on these videos, is to take a small pillow and stuff it underneath the monitor so it's jammed against the stand and the back side of the monitor.........this tilts the monitor back, so it can't drop forward when you're removing the screen. If the screen drops forward it will yank all of the cables out from their connectors, and your imac is toast! Oh yeah, and if you're gonna attempt to disassemble one of these machines, after removing the power lead you should push and hold the power button for at least a minute, so the power capacitors drain any residual charge. You should also wear tight fitting surgical gloves and an anti static wrist band to prevent any potential damage to the components. This is all basic stuff that nobody ever mentions.....just my two cents.
This is awesome! Thank you very much! One of the best iMac tutorial I've seen. I was bout to change my logic board battery. It's not saving time anymore... Too much to go trough though. Hahahah.. I'll just leave it plugged in. I use this to write a lot of script and as my backup unit. I have a newer one. I just felt like this will still work on simple stuff.
The true Wayne is that watching at your tutorial becomes very easy to follow, since you described, basically every cable by its own name, I could figure it out what my problem could be, as you mentioned different sensors that works to control temperature. My case started today with a big noise in the fan located behind the logic board, before to listen those fans, you had to get very close to the computer, now I can hear it from every where, at the same time the bluetooth card stops working, this two events at the same time makes me wonder if there is a temperature sensor damaged, so to find out witch one is the one with the problem, I'm planning to change them all ( if I'm able to find them). I'll post my experience when I finished with the job to let you know how did it goes using your guidance. Thank you for your excellent work!
+Guillermo Estrada Sounds good. Just to give you a heads up, I understand that the blue tooth might have to be replaced regardless (could just be disconnected), but give this a try first. Download www.macupdate.com/app/mac/47386/macs-fan-control This fan control app and manually lower each fan to see which one is responsible for the noise, this will give you an idea where to start. If it's your personal computer then the software might be a solution, if it's for a client then replace the sensors, there are 3 (Hard Drive, CPU Fan, Optical Drive) any one can cause the others to malfunction as the temperature will change in the entire iMac if one is bad.
Very clear and concise video which I will be using to replace the logic board on my 27” iMac. Broke off some prongs on the video display port therefore the need to replace the board. Thank you.
We're you getting the purple and green squares? I think I need to replace my logic board unless that will fix it. Mine is a 27" iMac. It freezes up constantly from what seems like overheating, but for a few weeks with no issues the fan ran at full speed and then died I think. Now need a new fan and fix logic or graphics card.
Many thanks for a very helpful video. You did a fantastic job on the step by step removal and replacement. You saved me from many mistakes. Thanks again!!
+Wayne, this is an extremely difficult repair and I'm very glad that you had success with this replacement. I would like to ask you if you have any feed back on how to improve this follow along replacement video. We are planing on reshooting most of our videos in the future and feed back is very valuable to us. Thank you in advance.
+Save Apple Dollars Hi, and I hope these few suggestions will be helpful. 1. The black logic board is hard to see. I think some extra lighting, especially showing the connectors, would be great. 2. I laid the iMac on its back to remove and reinstall the 8 T10 screws. 3. I put the logic board screws on sticky painters tape in the order that they were removed. Reversed the process for reinstallation. Took the guess work out of it. 4. The IR sensor fits onto a plastic post. 5. Need to reapply the foil tape on the copper heat sink to the housing.(Don't know if necessary) Overall, you did an excellent job and I hope that my suggestions will be of use to you.
+Wayne Bergeron Very good suggestions, it might be a while before these videos are redone but look forward to seeing some of them in the next release. Thank you again Wayne.
Anyone know how to take the gpu off? I don't know what to do with those shiny black topped screws. Turn them or push them or just pry it off? Little help please thanks....
This is an excellent video.I replaced my PRAM battery,put it back together,everything works fine EXCEPT my BLUETOOTH isnt working.The I con for bluetooth has a horizontal line crossing it out.Any suggestions?
Unfortunately no for most of them. Each year has several variants and some years have variants with integrated graphics while others have dedicated. Just stuck to an exact replacement.
Thanks for making this video! Do you know about the "video card pressure wall" and could you describe where it should be positioned? While removing the logic board from my iMac (mid-2010 21.5" A1311 model) in order to replace the backup battery, the small, black plastic part fell out. I haven't been able to work out where it goes. It's made of the same black plastic as the power supply pressure wall but much smaller with just one screw hole. The Apple Technician Guide mentions it in the list of instructions for installing a new logic board. However, it doesn't show where the part should be positioned.
Awesome video. Unfortunately, I decided to replace the pram battery and the holder became disconnected on one end. Any thoughts on how I reconnect it? Thx
hello. great video. i have a 2011 27" Imac. It was beach-balling constantly and now crashes mid way through start up and turns off. Do you think a new logic board would help me?
I replaced a new logicboard, but I don't get power anymore.... I checked the power button cable, and it's connected... Is there a way to test it outside of the chassis? can I test the power functionality without connecting the LCD?
Hi mate i am trying to reassemble my iMac late 2011 logic board and this cable fell off from back of the logic board , i dont knkw where it goes i know one end of it connects to back og the logic board but whrre does the other connectir go ? Can ypu please help ?
I know it may be old, but I have a 27" iMac emc 2390. It's had purple/green squares on the screen for a few years, but for some reason the fan kicked it in at full speed and ran fine for a few weeks. Now I think the fan died and it seems like it overheats and has obvious graphics card issues. Any idea what the best fix for that would be? Will be reading through the comments, but I just watched a bunch of CompTIA A+ videos and want to see if it's fixable. It worked great for years, and I now have a tool kit for this. Just figuring out what I need to do before attempting it.
Thanks for your video !!! it is great ! I´m trying to bring back to life my Imac 21.5" mid 2010 and I want to ask you please if I can change the LOGIC BOARD with an Imac 21.5 mid 2011 Logic board, because I was reading and this has LGA 1555 sockets and this will allow to make better upgrades for GPU, and CPU. Thanks =)
Thanks - I fond out that 2012 and later iMacs are way harder to service, as screen is bound to protective glass and are held by sticky tape, not just magnets. It may be hard to put it back together the same way
Hello. Right now I'm looking for an imac to work with text, pixelmator web browsing and 720p youtube viewing. Will HD 4670 and 16 ram card handle this? Purchase for 2-3 years. Tell me, is the 4670 card very hot? I need a job 12 hours a day. Does the card burn fast like the 2011 or can the 4670 card in the 2010 model (256) be used for a long time? Thank you
Help! I have a A1311 2009. Power checks on logistic board. Pin 4 12v Pin 11 gets 12v when I hit the power button but no LED 2 light. Also no signal power on pin 12 when I press the power button. What and how do you take measurements of a signal power?? Disconnected all plugs one at a time. No fix. Also what is that battery on the logistics board? Can that be dead. What is its purpose? Thanks!
that looks like the cmos battery normally controls the bios settings of the machine like time and date should read over 3volt ,if dead or reads 3 volt or lower just replace as these are cheap,i had a pc few years ago that would not boot up but just changing the bios battery got that one to life
Thank you guys for the very detailed tutorial! Question: can I replace the logic board of my mid 2010 iMac with one from mid 2011? I want to run quad core i7 and my mid 2010 can't do that due to TDP limitations.
@@GRIBSOFT Has this been verified to work? My mid 2010 Logic Board is shot...I broke the LVDS connector swapping out my GPU. I want to upgrade to the mid 2011 as well.
Is it possible to replace a late 2009 Imac 21 inch logic board with one from a later model say a 2011. I inadvertently damaged the display port on the logic board during a hard drive upgrade. System still works fine with an exterior monitor but looking for options to get the built in screen back.
Unfortunately even though the form factors are close, other parts sensors and connectors are different on many logic board models. Your best bet it to solder the LCD connector if you can. Also keep in mind depending on your budget, you can buy a working iMac with a broken LCD same year and just swap it out. Here is an example for %150: www.ebay.com/itm/Apple-iMac-A1311-MB950LL-A-Core-2-Duo-3-06GHz-2GB-RAM-No-HDD-Bad-LCD-No-Glass-/131945404765?hash=item1eb88f195d:g:3R8AAOSw6n5Xr1Zc
I'm told the connectors for a 2nd HD/SSD are on the back of the motherboard. Where can I find those? I'm installing a 2.5" HD (with 2.5" to 3.5" adapter bracket, installed where the original HD would be), & an SSD as my boot drive installed directly underneath it. (Rather than restricting airflow past the DVD drive & GPU.) I imagine I'll need to put the temperature sensor on the 2.5" HD. Where do I put the electrostatic pad, in this config?
Hi, I’ve followed your video, I’ve made everything like you, but now the computer doesn’t starts. I’ve tripled check the power source, it’s not that. It doesn’t receive any power, it doesn’t do nothing when I press the power button.
Hi- I found a 2008 Imac in a dumpster and plugged it in and the screen flashed on and then flashed right off again. It's barely even scratched other than that. It;s got bluetooth keyboard and mouse with the original box. Do you think it's worth trying to save? What would cause it to flash on and then off again. Power supply. Thanks for the great video!
If it's an aluminum one then yes, it's worth saving. You have to take off the front face and right bellow the LCD there are 4 LED indicators (d3nevzfk7ii3be.cloudfront.net/igi/3n5DFiXP1P3YrQDG) use the indicators to find out if the graphics card is bad. When power cord is plugged in, 1st LED is lit. After pressing the power button LED 1 and 2 should be on, then the 3rd LED should also light up after 3 seconds, if the 3rd one lights up the graphics card is good and the LCD is bad and needs replacing, if you replace the LCD and still have issues then replace the power supply and you should be set. If the 3rd LED never lights up then the graphics card needs replacement. To give you an idea, it's one of these 3 parts and prices are approximate market prices: LCD $50-100, power supply $20-80, graphics card $50-120. If you take your time and read up on things you can save this unit at around $100 or less and it will be a great machine to last a few more years with a small HDD and RAM upgrade. Good luck ;)
I took off the motherboard to replace the graphics card but when i put everything back together the screen doesn't turn on but the computer seems to be running. Which plug makes the screen work? Did I miss it, or did I just ruin my computer?
Several cables. The lcd screen has 3 cables, one power, one lvds data, and one temp sensor. If all three are plugged in but no cigar on the video output, you either have to reseat the graphics card or the replacement is bad and have to exchange it. I know it’s ridiculous having to replace the board possibly 3 times but that’s just what comes with troubleshooting an iMac.
@@GRIBSOFT Ok Thanks for replying. And do you know if it's normal for the first 3 green LED lights to come on and the 4th one to be off on the motherboard?
Hi. I ripped the vertical sync flex/ribbon cable. If I used the iMac without that, would that be ok or it'd damage the iMac? Also, when I power the iMac, there are fans and the hard disk spins but there's nothing on the screen and there's no chime. It's an 8 year old iMac. Will changing the PRAM battery make it boot again? I bought an Energizer CR2032 battery. Thank you. God bless, Proverbs 31
Hi. Thanks. I got to revive the ripped vertical sync flex cable by cutting the bad part and stripping the insulator with hot knife (butane powered lowest setting), sanding the copper contacts w/ 600 grit sandpaper and supergluing the blue hard plastic underneath.
Has anyone done this recently and can offer any advice/tips? Believing I have the ability to reassemble at any moment is what I need to feel confident before taking it apart.
Hi there , I have a 2010 iMac that is stuck on apple logo and white screen with loading wheel , loading bar comes on then goes , I replaced the hdd, and then I got the , question mark with the folder , any help would be awesome, video would be even better, cheers and thanks for the videos
Hi Wayne. ¿Can you Healp me?. Mi Logicboard is dead and i cant find the replacement. iMac (21.5-inch, Mid 2011-A1311-MC812LE/A) - CPU Speed 2.7 - Quadcore I5. ¿Some Site-Seller to find it?. Thanks.
Hi. I have a macbook pro mid 2012 13" core i5 that was recently water damaged. I decided to send to iStore to repair it but finally they told me that I need to get another logic board with model number A1278, The question is how much risk exist if I swap my logic board i5 to logic board i7 13" 2012 mid, both are the same model number A1278, Do you recommend doing this? Thank you!!
No risk at all, if it fit's it will work perfectly. Mac OS X detects new hardware up on startup and modifies all the kexts (drivers) to new hardware every time you cold boot your Mac.
Please not that after water damage, the first problem is the keyboard. The logic board can be good but the Mac won't power on because the power button rail that is part of the keyboard is bad. Look at this guide ( www.insidemylaptop.com/turn-on-macbook-pro-laptop-without-power-button-locating-power-on-pads/ ), plug a charger into your mac and open the rear panel, try to short the power pins and see if it starts. If it does, then you need a keyboard replacement, apple will always call a kb replacement a logic board replacement.
So I have a question my 2010 Imac model keeps shutting down. I notices that when I try to load a game up it take forever and when it starts to play the hole iMac shuts down. I’m wondering if the thermal paste dried out. Any idea thx
how do i fix a wire that was damaged when being pulled out, (the little box seperated from the wire, one end of the wire is still inside the other has slipped out clean the little one @ 5:25).
Hey quick question my I mac won't turn on at all took it to a shop they replaced the power supply board and that didn't work. I pulled my imac from the shop to repair it myself. I'm thinking it's the video card, what do you think? Or logic board?
Are the fans spinning? If so then it's 1.LCD or 2. Video inverter or 3. graphics card in that order, if the fans don't spin then it's the logicboard or the power supply replacement is also bad.
Hi , save apple dollars, I have another query, a 2010 , 21.5 inch , screen doesn’t turn on and there’s no chime, and only 1 led comes on, then I removed the graphics card, turn it on and 2nd led come on , I get startup chime and I can hear the Mac loading and running nicely ,(without screen) can you give your expert opinion please, cheers
Hi, Do you know if a replacement logic board has to be the exact same processor speed? I have a 2.4ghz 24" MA878LL with a dead board, and i've found a board for the 3.06ghz 24" which has the same a1225 model number. Would this work? Thanks
+iblake12 It should fit no problem, I believe everything should transfer, even the ddr2 ram and ati graphics card. Make sure that it's not the graphics card or the power supply that's dead. You can do this by removing the front shield and plugging in the power cord. You will see 4 led lights in the front bottom right side of the logic board, right under the LCD. If you see 1 green light and after pressing the power button, if the second green light comes on then the logic board and the power supply are fine. If the 3rd led light comes on then the graphics is fine and the lcd is broken. when everything works all 4 lights come on. This is a built in test used by Apple to diagnose that models issues.
+Save Apple Dollars I have heard of this before, honestly I don't know if it's the gpu or the logic board, it boots halfway with lots of artefacts and then dies and attempts to boot again. So my guess is logic board?
Richard Sunday I can do it for you, I’m working on one right now and I’m in Southport. Lemme know if you still need it fixed / i can buy it off you. :)
It's slightly different on 2012 and later, we haven't gotten around to those models yet as we are covering all Apple products including iPhones and laptops. For now use this guide from iFixit, it's a great source of reference www.ifixit.com/Guide/iMac+Intel+21.5-Inch+EMC+2544+Logic+Board+Replacement/16600
hi,saveappledollars, my late 2009 27' iMac loads halfway on normal boot then stops , i performed all the resets changed the P-RAM battery , reinstalled Mac OS high Sierra , ran test on HDD which was fine, and it still won't boot up on normal start up,i then booted it up on safe mode and loaded fine ,screen is perfect everything works ,some help to resolve normal startup would be greatly appreciated, cheers
You will have to replace your Graphics card. It's the issue. In safe mode the graphics driver is not loaded and so it can start on a generic driver, that's why it can boot up. You will need to purchase a Radeon HD 4850 for imac on ebay.
Save Apple Dollars , ok thanks, just one more thing, the hard drive wouldn’t erase in disk utility in safe mode , It said it had errors, then I put another hard drive in it and I got the flashing folder and question mark, is it possible that it’s the hard drive that’s faulty and causing it not to start?
Save Apple Dollars , I fixed it , heated the chip and it worked, it was definitely the problem, thank you for identifying it, very grateful , cheers ✌️👌
Could someone help me... My mac A1311 is not turning on. Led 1 power supply on, led 2 on, led 3 gpu on led 4 LCD off. Dvd start and stop. Cooler and speakers does not start. Flat cable (12pin) and connector power board x lcd ok.
![Late 2009 iMac 27" Video Card Repair [4850 Bake]](http://i.ytimg.com/vi/v1DXBLkiqFM/mqdefault.jpg)
Super good! One of the best I-Mac tutorials ever! I agree It is better than iFixit. You got it down and done right! Thank you very much! Got any ideas about CUP replacement for Imac 21.5 Mid 2010?
Do you know if the SATA cable for the hard drive can be replaced without having to remove the motherboard? If I just removed the fan on the right side and superdrive can the SATA cable be reached and removed?
From what I understand if you have one of the Dual Core Intel CPUs then you are able upgrade the CPU.
@@LordToxygene I have the dual core inside my old iMac 21" 2009; I'm still searching for logic boards with modern CPUs that can support the Mac; so that I can use the latest OSX on it. 😄
I have been fixing Windows based laptops and MacBook Pros for a few years but never tackled an iMac. I picked up an 09 for 75 bucks and followed your great video. I found a logic board for 49 bucks. Took my time and everything works fantastic. Thank you for your great instructions.
Awesome! Always glad to help!
My 21.5 mid 2011 iMac went completely dead and would not power up at all. I took it to the Apple store and was told it might be the power supply. As it turned out, they told me the logic board is bad and would cost $650.00 to replace. I found a replacement board for $30.00, followed your video instructions and just wanted to say thanks. Great directions that saved me a ton of money. Best tutorial I've seen!
This is the best tutorial a ever seen about imac 2011
Thanks for the simple and easy to follow video! SEEKING ADVICE!
I found a late 2009 iMac 21" at the recycling center in my town. I originally just wanted the RAM cards from it, considering I do not know how to repair computers at all. When I got it home, I tried starting it up, but I got nothing. Although it didn't rain, there was probably some condensation/water damage that occurred. Did a few google searches and went down that rabbit hole. One LED diagnostic light remains on. I removed the logic board thanks to this video, and the coin battery on the back does seem a bit corroded. I'm thinking the slight corrosion on the coin battery is an indication of other areas that may be damaged. And say I go ahead, and order a new logic board, I'm not even sure if that was the problem in the first place. It was fun to pull this apart and learn a bit, but the RAM cards is enough of a victory for me. It's just seems like such a shame to throw away such a beautiful looking iMac. Asking this question is really my final attempt at wondering if I should dive any deeper here, but does anyone have an idea if this is a logic board issue, or if I should just chuck this and save the RAM??
If you have one diagnostic light on that means the logic board is most likely fine and all you have to do is replace the power supply. Some thing like this www.ebay.com/itm/Apple-iMac-21-5-A1311-2009-2010-2011-205W-Power-Supply-661-5299-614-0445-/262628800550?hash=item3d25e57826:g:E6EAAOSwB09YIGZ~
My bet is that will fix it.
Thanks for helping me with mine. Picked up a 2011 27 inch iMac for free with broken ram slots. Now I feel more confident about approaching it.
Our 2011 iMac would not start up so we took it to a reputable Mac shop. Apple repair shop diagnosed bad logic board. They tried a new video card in the shop and that did not work.
So, we personally ordered a new logic board online and installed it by following your EXCELLENt video. The main thing different about our computer was a big metal flag-shaped part that we transferred to the new logic board (the silver "flag" portion was just above the CD ROM drive.) We also had two more cables than you to connect on the back side of the logic board.
Now, we can hear the proper start-up tone but the screen remains black and then the fan kicks on within a minute. We are able to press esc. on the keyboard and it beeps and we can control the volume of that beep via volume controls on keyboard. Seems like we have made progress since the startup sound did not previously occur before we installed the new logic board. We tried safe boot and the response was the same as noted above. Any chance we just didn't hook up the screen properly? Suggestions?
We want to keep this computer because we put a solid state drive in this year as well as additional RAM. It has also had video card replaced in the past. thank you
Ok so sounds like one of the following has a connection issue/broken or wrong part for the logicboard replacement, 1. LCD Inverter board, 2. LCD Panel, 3. Graphics card Unit (some imacs for onboard graphics so no card). If it's not a simple issue like the power cables behind the lcd are not plugged in correctly then I would start replacing those parts the that order.
Once again, you are the man! I am so thankful to you for labeling everything and disassembling everything and reassembling it with great instructions!
Thanks for the comment
Thanks for your video. I successfully replaced the logic board. I recommend attaching stickers to wires and labeling or taking photos so it’s easy to put back in reverse. I drew a schematic for the screws and this sped everything up. I had to look at photos because I also forgot what side logic board went and what order screen and frame go on.
One simple safety measure, that nobody shows on these videos, is to take a small pillow and stuff it underneath the monitor so it's jammed against the stand and the back side of the monitor.........this tilts the monitor back, so it can't drop forward when you're removing the screen. If the screen drops forward it will yank all of the cables out from their connectors, and your imac is toast!
Oh yeah, and if you're gonna attempt to disassemble one of these machines, after removing the power lead you should push and hold the power button for at least a minute, so the power capacitors drain any residual charge. You should also wear tight fitting surgical gloves and an anti static wrist band to prevent any potential damage to the components.
This is all basic stuff that nobody ever mentions.....just my two cents.
This is great! Thank you very much for doing this. All the extra graphic tips are a big help. Changed out my logic board properly, thanks to you.
This is top tier content. One of the most helpful videos I've seen on RUclips. Thanks so much!
Hi very good video. It is clear as to you know what you are doing. Can you please make a video about the entire wire connections of imac 2011, 21.5''?
This is awesome! Thank you very much! One of the best iMac tutorial I've seen. I was bout to change my logic board battery. It's not saving time anymore... Too much to go trough though. Hahahah.. I'll just leave it plugged in. I use this to write a lot of script and as my backup unit. I have a newer one. I just felt like this will still work on simple stuff.
The true Wayne is that watching at your tutorial becomes very easy to follow, since you described, basically every cable by its own name, I could figure it out what my problem could be, as you mentioned different sensors that works to control temperature. My case started today with a big noise in the fan located behind the logic board, before to listen those fans, you had to get very close to the computer, now I can hear it from every where, at the same time the bluetooth card stops working, this two events at the same time makes me wonder if there is a temperature sensor damaged, so to find out witch one is the one with the problem, I'm planning to change them all ( if I'm able to find them).
I'll post my experience when I finished with the job to let you know how did it goes using your guidance.
Thank you for your excellent work!
+Guillermo Estrada Sounds good. Just to give you a heads up, I understand that the blue tooth might have to be replaced regardless (could just be disconnected), but give this a try first. Download www.macupdate.com/app/mac/47386/macs-fan-control This fan control app and manually lower each fan to see which one is responsible for the noise, this will give you an idea where to start. If it's your personal computer then the software might be a solution, if it's for a client then replace the sensors, there are 3 (Hard Drive, CPU Fan, Optical Drive) any one can cause the others to malfunction as the temperature will change in the entire iMac if one is bad.
Thank you Wayne I will do exactly as you recommend, it's my computer and I will post the results.
+Guillermo Estrada Great!
AWSOME!!!! BEST TUTORIAL!!! THANK YOU BROTHER!!!!
Very welcome!
Very clear and concise video which I will be using to replace the logic board on my 27” iMac. Broke off some prongs on the video display port therefore the need to replace the board. Thank you.
Good luck.
Amazing video man, i'm saving this one for later and I can't help but check out more of your content! Thank you so much.
Thanks mate. Great video. I used this to put an imac back together after baking the video card and it works like a dream. Cheers
Great!
We're you getting the purple and green squares? I think I need to replace my logic board unless that will fix it. Mine is a 27" iMac. It freezes up constantly from what seems like overheating, but for a few weeks with no issues the fan ran at full speed and then died I think. Now need a new fan and fix logic or graphics card.
Excellent instructive video, well articulated and executed... helped me to repair my imac. Many thanks.
That's why we do it!
Thanks a lot, is really going to help me instal a new logic board in my son's Imac!
You saved me 500 dollars.. thanks!!
Always glad to help!
Many thanks for a very helpful video. You did a fantastic job on the step by step removal and replacement.
You saved me from many mistakes. Thanks again!!
+Wayne Bergeron Thank you, always glad to help.
+Wayne, this is an extremely difficult repair and I'm very glad that you had success with this replacement. I would like to ask you if you have any feed back on how to improve this follow along replacement video. We are planing on reshooting most of our videos in the future and feed back is very valuable to us. Thank you in advance.
+Save Apple Dollars Hi, and I hope these few suggestions will be helpful.
1. The black logic board is hard to see. I think some extra lighting, especially showing the connectors, would be great.
2. I laid the iMac on its back to remove and reinstall the 8 T10 screws.
3. I put the logic board screws on sticky painters tape in the order that they were removed. Reversed the process for reinstallation. Took the guess work out of it.
4. The IR sensor fits onto a plastic post.
5. Need to reapply the foil tape on the copper heat sink to the housing.(Don't know if necessary)
Overall, you did an excellent job and I hope that my suggestions will be of use to you.
+Wayne Bergeron Very good suggestions, it might be a while before these videos are redone but look forward to seeing some of them in the next release. Thank you again Wayne.
You have a like and sub. This info was invaluable to me. Thank you for doing such a great job.
Anyone know how to take the gpu off? I don't know what to do with those shiny black topped screws. Turn them or push them or just pry it off? Little help please thanks....
This is an excellent video.I replaced my PRAM battery,put it back together,everything works fine EXCEPT my BLUETOOTH isnt working.The I con for bluetooth has a horizontal line crossing it out.Any suggestions?
Yes I agree, very well done. Much appreciated. Thank you. Very professionally done!
Thank you.
great video man bring it on!
Very well done -- thanks a lot.
Welcome!
Excellent Thank You!
Nice video guys!
Are the logic boards on the three models (2009-2010-2011) interchangeable? Can I put a 2011 logic board in in a 2010 model?
Unfortunately no for most of them. Each year has several variants and some years have variants with integrated graphics while others have dedicated. Just stuck to an exact replacement.
Hi Bud have you a teardown for the 27" version?????
Helped a lot!
If my mid-2009 iMac came with a 2.26ghz logic board, can I get a 3.06ghz logic board to use instead?
Nice brother
Thanks for making this video!
Do you know about the "video card pressure wall" and could you describe where it should be positioned? While removing the logic board from my iMac (mid-2010 21.5" A1311 model) in order to replace the backup battery, the small, black plastic part fell out. I haven't been able to work out where it goes. It's made of the same black plastic as the power supply pressure wall but much smaller with just one screw hole. The Apple Technician Guide mentions it in the list of instructions for installing a new logic board. However, it doesn't show where the part should be positioned.
Awesome Tutorial. Is this the same method for the 27” of the same year? Thanks
I love the ad,its great.
Thanks!
Thanks
Awesome video. Unfortunately, I decided to replace the pram battery and the holder became disconnected on one end. Any thoughts on how I reconnect it? Thx
Solder skills?
very good
What is the board next to the Hard Drive called (on the left side)? Thank You.
hello. great video. i have a 2011 27" Imac. It was beach-balling constantly and now crashes mid way through start up and turns off. Do you think a new logic board would help me?
I replaced a new logicboard, but I don't get power anymore.... I checked the power button cable, and it's connected... Is there a way to test it outside of the chassis? can I test the power functionality without connecting the LCD?
thank you
Thanks great video dude
Hi mate i am trying to reassemble my iMac late 2011 logic board and this cable fell off from back of the logic board , i dont knkw where it goes i know one end of it connects to back og the logic board but whrre does the other connectir go ? Can ypu please help ?
Will this allow to get around a locked apple I'd logicboard?
I know it may be old, but I have a 27" iMac emc 2390. It's had purple/green squares on the screen for a few years, but for some reason the fan kicked it in at full speed and ran fine for a few weeks. Now I think the fan died and it seems like it overheats and has obvious graphics card issues. Any idea what the best fix for that would be? Will be reading through the comments, but I just watched a bunch of CompTIA A+ videos and want to see if it's fixable. It worked great for years, and I now have a tool kit for this. Just figuring out what I need to do before attempting it.
Could this help fix sound issues? My imac has no sound whatsoever. I've tried everything, even the headphone plug in and out trick.
currently, I have late 2009 iMac 27"... Can I upgrade with the newest logic board (2011)?
Thanks for your video !!! it is great ! I´m trying to bring back to life my Imac 21.5" mid 2010 and I want to ask you please if I can change the LOGIC BOARD with an Imac 21.5 mid 2011 Logic board, because I was reading and this has LGA 1555 sockets and this will allow to make better upgrades for GPU, and CPU. Thanks =)
Should fit.
i'm attempting the same thing now. How did your upgrade go?
This is a good video.
Thanks!
MonolithTwentyTen i
Great tutorial I have a late 2012 iMac whose SD reader is not working. Is it the same procedure? thank you!
The late 2012s are a bit different, just try to search other videos, we are working on the videos for those models.
Thanks - I fond out that 2012 and later iMacs are way harder to service, as screen is bound to protective glass and are held by sticky tape, not just magnets. It may be hard to put it back together the same way
Hello. Right now I'm looking for an imac to work with text, pixelmator web browsing and 720p youtube viewing. Will HD 4670 and 16 ram card handle this? Purchase for 2-3 years. Tell me, is the 4670 card very hot? I need a job 12 hours a day. Does the card burn fast like the 2011 or can the 4670 card in the 2010 model (256) be used for a long time? Thank you
Help! I have a A1311 2009. Power checks on logistic board. Pin 4 12v Pin 11 gets 12v when I hit the power button but no LED 2 light. Also no signal power on pin 12 when I press the power button. What and how do you take measurements of a signal power?? Disconnected all plugs one at a time. No fix. Also what is that battery on the logistics board? Can that be dead. What is its purpose? Thanks!
that looks like the cmos battery normally controls the bios settings of the machine like time and date should read over 3volt ,if dead or reads 3 volt or lower just replace as these are cheap,i had a pc few years ago that would not boot up but just changing the bios battery got that one to life
Thank you guys for the very detailed tutorial! Question: can I replace the logic board of my mid 2010 iMac with one from mid 2011? I want to run quad core i7 and my mid 2010 can't do that due to TDP limitations.
It should work.
@@GRIBSOFT Has this been verified to work? My mid 2010 Logic Board is shot...I broke the LVDS connector swapping out my GPU. I want to upgrade to the mid 2011 as well.
@@kruss71 physically they fit yes, but not a single connector or adapter is compatible sadly.
Can i put 3GZ processor in imac 9.1 2009?
Is it possible to replace a late 2009 Imac 21 inch logic board with one from a later model say a 2011. I inadvertently damaged the display port on the logic board during a hard drive upgrade. System still works fine with an exterior monitor but looking for options to get the built in screen back.
Unfortunately even though the form factors are close, other parts sensors and connectors are different on many logic board models. Your best bet it to solder the LCD connector if you can. Also keep in mind depending on your budget, you can buy a working iMac with a broken LCD same year and just swap it out. Here is an example for %150: www.ebay.com/itm/Apple-iMac-A1311-MB950LL-A-Core-2-Duo-3-06GHz-2GB-RAM-No-HDD-Bad-LCD-No-Glass-/131945404765?hash=item1eb88f195d:g:3R8AAOSw6n5Xr1Zc
best . tutorials thank you
Welcome!
My 2010 iMac mic port is at the bottom of the motherboard by the fan I’m confused lol
Can iMac 2011 21 motherboard really fit on 2010 21 Chassis? Or I have to make some change? Or it just plug n play?
How similar is the to replacing a 27" iMac logic board of the same years?
Very similar, just the size and shape of some parts this slightly different but principle and approximate location is almost the same.
Save Apple Dollars THANKS
I'm told the connectors for a 2nd HD/SSD are on the back of the motherboard. Where can I find those?
I'm installing a 2.5" HD (with 2.5" to 3.5" adapter bracket, installed where the original HD would be), & an SSD as my boot drive installed directly underneath it. (Rather than restricting airflow past the DVD drive & GPU.)
I imagine I'll need to put the temperature sensor on the 2.5" HD. Where do I put the electrostatic pad, in this config?
Can you do exact same video for 2009 2010 2011 27 imac? thxs
I have a imac 27 i7 mid 2011. Producing electrical buzz noise. Had psu swapped to no avail. Still buzzing. Please can you help?.
Hmmm big jump cut getting that logic board seated. Around 12:14. That’s hard to get back in. No one is showing this.
Hi, I’ve followed your video, I’ve made everything like you, but now the computer doesn’t starts. I’ve tripled check the power source, it’s not that. It doesn’t receive any power, it doesn’t do nothing when I press the power button.
What about the power butting and the power cord.
Hi- I found a 2008 Imac in a dumpster and plugged it in and the screen flashed on and then flashed right off again. It's barely even scratched other than that. It;s got bluetooth keyboard and mouse with the original box. Do you think it's worth trying to save? What would cause it to flash on and then off again. Power supply. Thanks for the great video!
If it's an aluminum one then yes, it's worth saving. You have to take off the front face and right bellow the LCD there are 4 LED indicators (d3nevzfk7ii3be.cloudfront.net/igi/3n5DFiXP1P3YrQDG) use the indicators to find out if the graphics card is bad. When power cord is plugged in, 1st LED is lit. After pressing the power button LED 1 and 2 should be on, then the 3rd LED should also light up after 3 seconds, if the 3rd one lights up the graphics card is good and the LCD is bad and needs replacing, if you replace the LCD and still have issues then replace the power supply and you should be set. If the 3rd LED never lights up then the graphics card needs replacement. To give you an idea, it's one of these 3 parts and prices are approximate market prices: LCD $50-100, power supply $20-80, graphics card $50-120. If you take your time and read up on things you can save this unit at around $100 or less and it will be a great machine to last a few more years with a small HDD and RAM upgrade. Good luck ;)
Also, read this post :) www.ifixit.com/Answers/View/126233/Where+are+the+diagnostic+led's+on+this+model's+logic+board
I took off the motherboard to replace the graphics card but when i put everything back together the screen doesn't turn on but the computer seems to be running. Which plug makes the screen work? Did I miss it, or did I just ruin my computer?
Several cables. The lcd screen has 3 cables, one power, one lvds data, and one temp sensor. If all three are plugged in but no cigar on the video output, you either have to reseat the graphics card or the replacement is bad and have to exchange it. I know it’s ridiculous having to replace the board possibly 3 times but that’s just what comes with troubleshooting an iMac.
@@GRIBSOFT Ok Thanks for replying. And do you know if it's normal for the first 3 green LED lights to come on and the 4th one to be off on the motherboard?
How can i check which motherboard i shud bye for my imac?
So do I have to pull out the memory before taking off the glass and LCD Screen?
So is it possible to remove the SuperDrive and add an SSD in its place?
Yes, it works the same way as with macbooks here www.appledollars.com/optical-bay-storage
very well
What is a reliable source to buy parts from? I'm considering buying a 2011 iMac but would also need to buy the part. Any recommendations?
I would go with eBay to save money but iFixit is a great place if you don't mind paying extra.
NEED HELP!!! Black screen, no light going to LCD, I get images of desktop with a flashlight, don't know how to fix help please
nmg zerberuz check the cables its a backlight issue so check that cable first
Keep using the torch, problem solved 👍
Can I Change My Late 2009 21.5" iMac logic board with Late 2009 27" iMac Logic board?
my imac has dead usb's, wifi, bluetooth connection. Do you have also a instruction to replace them ( not entire logic board)?
Yes all it www.appledollars.com just click on imac picture and select your screen size and year and there are replacement guides for all parts.
Hi. I ripped the vertical sync flex/ribbon cable. If I used the iMac without that, would that be ok or it'd damage the iMac?
Also, when I power the iMac, there are fans and the hard disk spins but there's nothing on the screen and there's no chime. It's an 8 year old iMac. Will changing the PRAM battery make it boot again? I bought an Energizer CR2032 battery.
Thank you. God bless, Proverbs 31
You need that cable for the LCD to function.
When do we need by the way to replace the PRAM battery. How many years? Thanks.
Not sure about that. When the mac starts forgetting settings like brightness and startup volume, you should replace the battery.
Hi. Thanks. I got to revive the ripped vertical sync flex cable by cutting the bad part and stripping the insulator with hot knife (butane powered lowest setting), sanding the copper contacts w/ 600 grit sandpaper and supergluing the blue hard plastic underneath.
Is this similar for an early 2008 imac 24" ?
Has anyone done this recently and can offer any advice/tips? Believing I have the ability to reassemble at any moment is what I need to feel confident before taking it apart.
Hi there , I have a 2010 iMac that is stuck on apple logo and white screen with loading wheel , loading bar comes on then goes , I replaced the hdd, and then I got the , question mark with the folder , any help would be awesome, video would be even better, cheers and thanks for the videos
Create an operating system boot USB here www.appledollars.com/create-osx-usb then watch this on how to install OSX www.appledollars.com/install-os-x
thanks heaps , it worked
Hi there... do you need to reinstall OS after this??? Do you lose any data??
You will not loose data as Apple uses DSDT booting so it will load the profile for the new board with all previous data on the hard disk unchanged.
This is going to save me $500!!! Woohoo!
Hi Wayne. ¿Can you Healp me?. Mi Logicboard is dead and i cant find the replacement.
iMac (21.5-inch, Mid 2011-A1311-MC812LE/A) - CPU Speed 2.7 - Quadcore I5.
¿Some Site-Seller to find it?. Thanks.
Search "mid 2011 A1311 logic board" on ebay and find the cheapest price as it fluctuates.
Hi.
I have a macbook pro mid 2012 13" core i5 that was recently water damaged.
I decided to send to iStore to repair it but finally they told me that I need to get another logic board with model number A1278,
The question is how much risk exist if I swap my logic board i5 to logic board i7 13" 2012 mid, both are the same model number A1278, Do you recommend doing this?
Thank you!!
No risk at all, if it fit's it will work perfectly. Mac OS X detects new hardware up on startup and modifies all the kexts (drivers) to new hardware every time you cold boot your Mac.
Please not that after water damage, the first problem is the keyboard. The logic board can be good but the Mac won't power on because the power button rail that is part of the keyboard is bad. Look at this guide ( www.insidemylaptop.com/turn-on-macbook-pro-laptop-without-power-button-locating-power-on-pads/ ), plug a charger into your mac and open the rear panel, try to short the power pins and see if it starts. If it does, then you need a keyboard replacement, apple will always call a kb replacement a logic board replacement.
So I have a question my 2010 Imac model keeps shutting down. I notices that when I try to load a game up it take forever and when it starts to play the hole iMac shuts down. I’m wondering if the thermal paste dried out. Any idea thx
Hi can I upgrade cpu on my iMac 21.5 i3 3.06 2010 , can I put i5 3.6 680 cpu
As long as it's same socket then yes.
how do i fix a wire that was damaged when being pulled out, (the little box seperated from the wire, one end of the wire is still inside the other has slipped out clean the little one @ 5:25).
I would look up some micro soldering videos.
vega269 has
hello, is it possible to upgrade my 2011 iMac i5 board to a i7 quad core board ? also can i upgrade to an SSD instead ? thank you
Both are possible, any ssd will work but the i7 board has to be the same Year and A model number.
Hey quick question my I mac won't turn on at all took it to a shop they replaced the power supply board and that didn't work. I pulled my imac from the shop to repair it myself. I'm thinking it's the video card, what do you think? Or logic board?
Are the fans spinning? If so then it's 1.LCD or 2. Video inverter or 3. graphics card in that order, if the fans don't spin then it's the logicboard or the power supply replacement is also bad.
Can i put a 2011 in a mid 2009
Hi , save apple dollars, I have another query, a 2010 , 21.5 inch , screen doesn’t turn on and there’s no chime, and only 1 led comes on, then I removed the graphics card, turn it on and 2nd led come on , I get startup chime and I can hear the Mac loading and running nicely ,(without screen) can you give your expert opinion please, cheers
Graphics card, LCD panel or the power supply, take your pick.
Hi, Do you know if a replacement logic board has to be the exact same processor speed? I have a 2.4ghz 24" MA878LL with a dead board, and i've found a board for the 3.06ghz 24" which has the same a1225 model number. Would this work? Thanks
+iblake12 It should fit no problem, I believe everything should transfer, even the ddr2 ram and ati graphics card. Make sure that it's not the graphics card or the power supply that's dead. You can do this by removing the front shield and plugging in the power cord. You will see 4 led lights in the front bottom right side of the logic board, right under the LCD. If you see 1 green light and after pressing the power button, if the second green light comes on then the logic board and the power supply are fine. If the 3rd led light comes on then the graphics is fine and the lcd is broken. when everything works all 4 lights come on. This is a built in test used by Apple to diagnose that models issues.
+Save Apple Dollars I have heard of this before, honestly I don't know if it's the gpu or the logic board, it boots halfway with lots of artefacts and then dies and attempts to boot again. So my guess is logic board?
+iblake12 it's the GPU I'm 99% sure. In rare cases it could be the power supply. Changing that Graphics card will fix it.
+Save Apple Dollars any a1225 card will work.
+Save Apple Dollars maybe I'll give that a shot then, do you have a video for this or is this video the closest?
I cannot trust myself to do this, anyone near Manchester UK fancy a job ?
Richard Sunday I can do it for you, I’m working on one right now and I’m in Southport. Lemme know if you still need it fixed / i can buy it off you. :)
Why is there no GPU?
Do you happen to have a video of a 2012 iMac logic board replacement? Would it be the same?
It's slightly different on 2012 and later, we haven't gotten around to those models yet as we are covering all Apple products including iPhones and laptops. For now use this guide from iFixit, it's a great source of reference www.ifixit.com/Guide/iMac+Intel+21.5-Inch+EMC+2544+Logic+Board+Replacement/16600
Did the same thing, but now I can't boot into Mac but I can boot from Linux from cd. The device can't find a bootable device.
What to do?
Create macOS usb on another mac or buy one from Apple.
hi,saveappledollars, my late 2009 27' iMac loads halfway on normal boot then stops , i performed all the resets changed the P-RAM battery , reinstalled Mac OS high Sierra , ran test on HDD which was fine, and it still won't boot up on normal start up,i then booted it up on safe mode and loaded fine ,screen is perfect everything works ,some help to resolve normal startup would be greatly appreciated, cheers
You will have to replace your Graphics card. It's the issue. In safe mode the graphics driver is not loaded and so it can start on a generic driver, that's why it can boot up. You will need to purchase a Radeon HD 4850 for imac on ebay.
Save Apple Dollars , ok thanks, just one more thing, the hard drive wouldn’t erase in disk utility in safe mode , It said it had errors, then I put another hard drive in it and I got the flashing folder and question mark, is it possible that it’s the hard drive that’s faulty and causing it not to start?
Save Apple Dollars , I fixed it , heated the chip and it worked, it was definitely the problem, thank you for identifying it, very grateful , cheers ✌️👌
Great news!
Could someone help me... My mac A1311 is not turning on. Led 1 power supply on, led 2 on, led 3 gpu on led 4 LCD off. Dvd start and stop. Cooler and speakers does not start. Flat cable (12pin) and connector power board x lcd ok.
If you know 100% it's not the LCD which 4th light is, then replace the power supply. Power supply might not be putting out enough power to the LCD.