At the moment i'm very very busy. The owner its on holiday and i'm still fixing jobs from the last year. Once i clear all, i will have more time. I'm really sorry.
Again, one more good lesson. But chief, let me ask you something, why you didn't just replace that board? Because of the board is broken, does that usb port going to work? 25:30 The Smile..😆 Really its addictive chief. And see those comments. I can't even imagine how much these people loves you, like me. if u didn't upload a video for two days they are afraid, you closed this channel. Don't let them down. God bless you chief.
So here I have a diagnostic enigma for you master , a very weird random issue: I have a ultrabook (Acer S3-391) that works fine when the battery (internal) is inside the case but the battery connector is UNPLUGGED from the motherboard, if I plug the battery connector to the motherboard OR I completely remove the battery from the case, the laptop shows a random fault, sometimes it starts, sometimes it doesn't. There are 2 leds, one turns on only when the laptop is working, the other one when both psu and battery are plugged to the motherboard. Anyway thanks for your videos and for sharing your knowledge :D.
For what I remember, that button under the bottom case is for cutting the power off in case of shorts... very useful to know in case of liquid damages.
USB port/s and Card Reader probably not working. You should have bought a replacement card p/no.: BA92-09691A E142 - looks like a common fault from the quantity sold. Like your videos in general with some good tips, but a bit sloppy in places.
Just found this video and it was great as expected. As for this solution on the laptop, a customer comes in and says, "can you fix this? Agreement is made at a modest price that is good for the shop and the customer as it is very reasonable. In the time frame it takes to make any kind of repair, the total amount of what was agreed upon is at risk. You cannot fix this? Here is your laptop back, sorry and no money is made. If you go back to the customer and say I need a $10 part and it will be a couple of days, they so often just say, well I will come back if I need to. The sale and time is lost. Customers do not care if one of the USB ports has to have superglue put in it. The others work and they normally need just one. This is a case of I must find a reasonable solution as fast as possible and not restoring the device to perfect condition. Unless otherwise stated, the customer just wants their computer back and if it requires a USB to out of service, so what? It only costs 30$ or for their life to come back.
Hi, good video. I have a Lenovo Z50-70 with onboard i7 and graphics chip. The laptop had a bad charge port, I repaired did all the updates, etc. Two days later the laptop does not power on. The battery is charging but the battery light is flickering after every 3 seconds. The laptop will only turn on if you reset the bios as you do. It will then load windows fully before switching off completely and refuse to boot until you reset the bios again. Checked ram and ram slots. Nothing seems to work. 20V D.C. Power is on all the power supplies there seems to be a short but unable to locate. Kindly could you advise what to check? Thanks
hello, I have a problem on a laptop like this, 19 is present, the charging light is on, when I turn it on there is no picture and the fan turns and stops for a second, the blue power light stays on but the fan does not turn and there is no picture. in which direction should I look further?
Mr. Sorin, I have a motherboard Toshiba L645D, it have light on the motherboard if I plug the charger. but if I press switch button, another light is turn on but only almost 2 second and then off again. I try again but it still same. Please help :(
the laptop was labeled as a no power device nothing was mentioned about sd card reader and usb ports and now it's powering on again so the main issue is fixed, as for usb ports and sd card reader issues they've been discovered after opening the device to fix the main problem of no power, the title of the video is clear. he can fix the whole board or order a new one but he has to fix what is given to him to fix
Did try to troubleshoot a dead hp envy dm6. I discovered an overheating IC and in the course of taking some voltages , led came on and was very happy until one cap decided to produce smoke. I am hoping if I change the cap everything would be fine.
Sometimes the IC is not the issue, but a powerline that connects to it that went faulty because of other components. Take a look to all interceptions that connect that IC and that Cap. Maybe you don't need to replace the cap (if ceramic). sometimes they are there just because of EMI
hi. nice channel. i watched every video :) i have a question. i have a samsung galaxy tab3 sm-t315. it's not turning on. battery is on 4.2 volt. it wont charge because battery is full? any solution?
hi have you had a problem with a laptop that HDMI port gets too hot. laptop turns on fine and everything but when i put work on gpu like a game the hdmi port on the motherboard gets really hot and burns to the touch.
Hi Sorin, Happy New Year, great to see you back, I have been sick for the last few days so only catching up on your video's now, brilliant as usual, a small question for you, if you're too busy dont worry. I have a faulty 4407A Mosfet on an Acer Computer, the chip is marked 4407A and beneath that there is another code that looks like GA4FBK, I have a replacement 4407A but the code beneath is different.BV9L28, is it safe to use that as a replacement and also what is the significance of the secondary code do you happen to know, I have searched on Google but just keep getting general Spec sheets for the 4077A , many thanks as usual Sorin, as i said dont worry if you dont have time to reply maybe one of your other subscribers may be able to help
Hi Joe, many thanks for your reply, I have been informed that the 2nd code isn't important as it relates to Manufacture & production, will bookmark the link, looks like it could come in very handy, many thanks again
He checked all pins of the cable one by one, looking for the 3.3v that goes to the power button. When the button is pressed, it goes to ground and reads 0v while pressed.
Commonly power button pin is 3.3V that when shorted to ground, turns the computer on. This doesn't mean you can short a 3.3V pin that you find elsewhere... Because that 3.3v is from the Super IO chip, pulled up by a resistor, only this particular 3.3v pin can be shorted.
Good Day teacher I just want to ask if it is normal to have a 3-4V output in the 2nd mosfet, I check the Voltage form the first mosfet and it has 19V in and out, and the 2nd mosfet it has 19V in and 3-4V out. is it normal? thank you and good day.
Nice...job the same problem in acer 4739 but the power butten is good and i am prese the power butten the blue led blink and next secout off very quikly the 3.3v ok...how can fix it...any help sir...
This tells me you might have a missing powerail, you have to search for it. Maybe you have an open mosfet on some powerrail or a short. So, put your probes on your GND and inductors, turn pc on and see the maximum voltage you can get from each one. If 0v, you already know what is missing. On modern CPUs, they recieve variable Vcore voltage (those ones with Turbo Boost Technology), this is generated by an intelligent IC, that receives a binary input from the super IO chip and creates a specific voltage (stimulating the mosfets at a specific PWM frequency) based on that binary. You also have this on the GPU chip, since it behaves the same way. Maybe one of your intelligent ICs is faulty as well, but search for open mosfets at first. When computer is on and the off again, this might be because the super IO chip detected something wrong with the power rails, since they have a specific time to respond and get operational.
Nice fix sorin i would be telling customer its temp fix and let him know board snapped as usb n sd card reader wont work, of course he will need too pay the parts n labour..
Hi. I'm writing here because dont replaying :). Could you make a video or explain about CPU and GPU power controling. Because have asus s200e starts and no display(display tested and working). All power reels have voltages except one which drive GPU. Have preplaced IC chip which drives GPU and still nothing. What I shout test? Thanks mate for answer. :)
That board seems to fail quite often so you can easily find a replacement on ebay. I know you fixed so at least the customer can use it but it's a recent and pretty recent laptop.
When you press the power button while measuring it I think if the power button was indeed working it would go from 3.3v to 0v I'm not sure but it is what i think it would happen.
I had a vostro 5470 took to the technician and he just told me there was nothing that could be done only changing board. The diagnostic was it couldnt recognize ram module. It woudnt even turn on.
i have a motherboard which is shorted to ground. the problem is after the 2nd mosfet. i applied amps to the circuit, the chipset gets hot. any advise from you guys about how to proceed??? . thx for your help
I believe the chipset is faulty as said. You can always put a cooler on top of it, and try to search for other heating areas. Try to disconnect VCC from the chipset, that is tricky if you don't have a manual or boardview and try again. If short goes of, you know is from the chipset. If short still remains, it can still be because of the chipset since there are still things connected to it. Remove the bios battery as well, since its connected to it.
its indeed very tricky since its an acer vn7-593g motherboard with an i7 7th generation and the schematics is not available online. I have disconnected all the coils near the chipset on the motherboard, still the chipset is heating. i think its quite difficult to do anything about it...
Reballing a new chip is an option but you need special machines to do that properly. "vn7-593g" is what it says on the motherboard or this is just the model itself?
lol i just clicked on your wife's channel coz i forgot what it was, (the gaming one) nice rifle i also have a HW100kt but not with the nice laminate stock :)
ha ha hot wiring a laptop :-D. It shows how fragile modern laptops are, the older types had the button nailed down and supported. I think a big ape has been stabbing that button with his massive fingers.
Still Busy? Its already been a long time we seen you. Now come back please and upload more videos. It seems that we are on summer vacation ;)
Are you going to close this channel or still busy in jobs? Reply back please
Lol, my favorite line from many of your videos : "OK, that's bad."
Sorin where are you? we are missing you. waiting for videos plz dont stop
At the moment i'm very very busy. The owner its on holiday and i'm still fixing jobs from the last year. Once i clear all, i will have more time. I'm really sorry.
Electronics repair school good luck man... I am in same situation as you now.
Thank you sorin and all the best
Dont feel sorry we understand.
Hope to see you soon its almost fryday:)
Keep up the great work👍
Looking forward to new videos soon.
Take care😎
Brilliant, I love this old school let's just fix it approach. Nice one
Is important to know what to check. Thank you for sharing!
You are my teacher. I plan to watch every video you do
Fark them out of all the channels on youtube this is the best i've fixed so many laptops because of this channel so easy to follow
Again, one more good lesson.
But chief, let me ask you something, why you didn't just replace that board?
Because of the board is broken, does that usb port going to work?
25:30 The Smile..😆
Really its addictive chief.
And see those comments. I can't even imagine how much these people loves you, like me. if u didn't upload a video for two days they are afraid, you closed this channel.
Don't let them down.
God bless you chief.
So here I have a diagnostic enigma for you master , a very weird random issue:
I have a ultrabook (Acer S3-391) that works fine when the battery (internal) is inside the case but the battery connector is UNPLUGGED from the motherboard, if I plug the battery connector to the motherboard OR I completely remove the battery from the case, the laptop shows a random fault, sometimes it starts, sometimes it doesn't.
There are 2 leds, one turns on only when the laptop is working, the other one when both psu and battery are plugged to the motherboard.
Anyway thanks for your videos and for sharing your knowledge :D.
Great video!. A lot of knowledge allows you to find quickly the problem. I'm learning more and more. Excellent video.
watching all the older videos
i am checking everyday for new videos
For what I remember, that button under the bottom case is for cutting the power off in case of shorts... very useful to know in case of liquid damages.
de azi un abonat fidel! buna treaba, urmaresc videoclipurile tale cu mare placere. spor la treaba in continuare
Nice TUT sir
This guy is a genius.
Sorin is not coming back because of some crappy people ... we have to understand him and we all agree his the best teacher :) that what happen
what do you mean he's not coming back?
Congrat for 10k subscriptions :)
Great vids mate, learning something all the time ! Most very fascinating brother yes indeed !
Happy new year, Sir.
Hi sorin how are you doing today I like all your videos and I have a question
Its friday yes, weekend :)))Sorin we mis you have a nice weekend
Another knowledge added to my information thank you for the video
USB port/s and Card Reader probably not working. You should have bought a replacement card p/no.: BA92-09691A E142 - looks like a common fault from the quantity sold.
Like your videos in general with some good tips, but a bit sloppy in places.
Yeah. I was wondering if the USB port that's before the pcb breakage works or not. It would have been nice if he checked that as well.
Just found this video and it was great as expected. As for this solution on the laptop, a customer comes in and says, "can you fix this? Agreement is made at a modest price that is good for the shop and the customer as it is very reasonable. In the time frame it takes to make any kind of repair, the total amount of what was agreed upon is at risk. You cannot fix this? Here is your laptop back, sorry and no money is made. If you go back to the customer and say I need a $10 part and it will be a couple of days, they so often just say, well I will come back if I need to. The sale and time is lost. Customers do not care if one of the USB ports has to have superglue put in it. The others work and they normally need just one. This is a case of I must find a reasonable solution as fast as possible and not restoring the device to perfect condition. Unless otherwise stated, the customer just wants their computer back and if it requires a USB to out of service, so what? It only costs 30$ or for their life to come back.
Nice work sir
Great video sir, thanks for sharing
nice technique
Any good news for the big comeback sorin ?
Very nice video and useful, thanks a lot.
thanks for clip Sorin
very good job sir
When can we expect the next video? Monday?
Nice weekend see you on monday👍👍👍
Hi, good video. I have a Lenovo Z50-70 with onboard i7 and graphics chip. The laptop had a bad charge port, I repaired did all the updates, etc. Two days later the laptop does not power on. The battery is charging but the battery light is flickering after every 3 seconds. The laptop will only turn on if you reset the bios as you do. It will then load windows fully before switching off completely and refuse to boot until you reset the bios again. Checked ram and ram slots. Nothing seems to work. 20V D.C. Power is on all the power supplies there seems to be a short but unable to locate. Kindly could you advise what to check? Thanks
Electronic Repair School Online Discord server: discord.gg/6zQWaTN (just click on the link and download Discord for ios, android, windows or mac)
Good job.
Where are you Master Sorin its been 2 weeks from now.. still no update on your channel
hello, I have a problem on a laptop like this, 19 is present, the charging light is on, when I turn it on there is no picture and the fan turns and stops for a second, the blue power light stays on but the fan does not turn and there is no picture. in which direction should I look further?
Good job, weldone
Sorin, when you find a damaged part,cracked or otherwise, why don’t you order a new part rather than jimmy rig? Thank you. Neal
Hlo. I missed ur videos where r u my friend?😉
Mr. Sorin,
I have a motherboard Toshiba L645D, it have light on the motherboard if I plug the charger. but if I press switch button, another light is turn on but only almost 2 second and then off again. I try again but it still same. Please help :(
the laptop was labeled as a no power device nothing was mentioned about sd card reader and usb ports and now it's powering on again so the main issue is fixed, as for usb ports and sd card reader issues they've been discovered after opening the device to fix the main problem of no power, the title of the video is clear. he can fix the whole board or order a new one but he has to fix what is given to him to fix
good job
Did try to troubleshoot a dead hp envy dm6. I discovered an overheating IC and in the course of taking some voltages , led came on and was very happy until one cap decided to produce smoke. I am hoping if I change the cap everything would be fine.
Sometimes the IC is not the issue, but a powerline that connects to it that went faulty because of other components.
Take a look to all interceptions that connect that IC and that Cap.
Maybe you don't need to replace the cap (if ceramic). sometimes they are there just because of EMI
When power is connected the e8 jr cap is virtually on fire, cos of burning smell and smoke. It is shorted .
You will only know if you remove it and test it outside of the circuit.
Are you OK long time no see
Did you use the new gadgets that you show on your video’s last year?
Good job, Sorin. Thank you for sharing your knowledge. It's very important to know what to check. >>> Magic as usual
where r you man???? we breath this channal.. come back to us
what about to writedown the board model number in order to tell the client if they want to buy a new one
bonjour monsieur Sorin j’espère que vous allez bien
Well done! :)
Hi Sorin where have u been? hope you're doing fine...
Hope all is well.. hope to see new videos soon..
What is the power L? Please explain more. Thnx
hi. nice channel. i watched every video :)
i have a question. i have a samsung galaxy tab3 sm-t315. it's not turning on. battery is on 4.2 volt. it wont charge because battery is full? any solution?
Reset the tablet.
Connect it to a computer and see if you can access data, if so, you might have a screen issue.
Reinstall the firmware if needed.
sir where are you?
hi have you had a problem with a laptop that HDMI port gets too hot. laptop turns on fine and everything but when i put work on gpu like a game the hdmi port on the motherboard gets really hot and burns to the touch.
Is there a display plugged into that HDMI port? If yes, that could still be within normal behaviour.
Hi Sorin, Happy New Year, great to see you back, I have been sick for the last few days so only catching up on your video's now, brilliant as usual, a small question for you, if you're too busy dont worry. I have a faulty 4407A Mosfet on an Acer Computer, the chip is marked 4407A and beneath that there is another code that looks like GA4FBK, I have a replacement 4407A but the code beneath is different.BV9L28, is it safe to use that as a replacement and also what is the significance of the secondary code do you happen to know, I have searched on Google but just keep getting general Spec sheets for the 4077A , many thanks as usual Sorin, as i said dont worry if you dont have time to reply maybe one of your other subscribers may be able to help
you might want to x-check p/n with netcomponents.com
Hi Joe, many thanks for your reply, I have been informed that the 2nd code isn't important as it relates to Manufacture & production, will bookmark the link, looks like it could come in very handy, many thanks again
good luck
Tanx Joe, you too
hlo sir great video
i just want to knw how do we knw that pin of cable are for power button
He checked all pins of the cable one by one, looking for the 3.3v that goes to the power button. When the button is pressed, it goes to ground and reads 0v while pressed.
Commonly power button pin is 3.3V that when shorted to ground, turns the computer on.
This doesn't mean you can short a 3.3V pin that you find elsewhere... Because that 3.3v is from the Super IO chip, pulled up by a resistor, only this particular 3.3v pin can be shorted.
Do you have any video about Dell and hp monitor
Adam bezmiş çalışmaktan fridaaaaay •:)))
Hi if I needed a laptop repaired, how can I contact you and where About’s is your repair shop??? Also can I get a quote before repair??many thanks jay
Good Day teacher I just want to ask if it is normal to have a 3-4V output in the 2nd mosfet, I check the Voltage form the first mosfet and it has 19V in and out, and the 2nd mosfet it has 19V in and 3-4V out. is it normal? thank you and good day.
where are you sorin ??? we missing you
Sir what happen you don't upload video
hi Prof,
can you tell us the model name of your hot air soldering station please!?
thank you very much!
from italy :)
VERY NICE MAGIC🙂🙂🙂
Nice...job the same problem in acer 4739 but the power butten is good and i am prese the power butten the blue led blink and next secout off very quikly the 3.3v ok...how can fix it...any help sir...
This tells me you might have a missing powerail, you have to search for it. Maybe you have an open mosfet on some powerrail or a short.
So, put your probes on your GND and inductors, turn pc on and see the maximum voltage you can get from each one.
If 0v, you already know what is missing.
On modern CPUs, they recieve variable Vcore voltage (those ones with Turbo Boost Technology), this is generated by an intelligent IC, that receives a binary input from the super IO chip and creates a specific voltage (stimulating the mosfets at a specific PWM frequency) based on that binary.
You also have this on the GPU chip, since it behaves the same way.
Maybe one of your intelligent ICs is faulty as well, but search for open mosfets at first.
When computer is on and the off again, this might be because the super IO chip detected something wrong with the power rails, since they have a specific time to respond and get operational.
Sorin, are you the owner of the shop? Or you have a boss?
Hello, WHAT Flux do you use?
How you determine which pin of button is 3.3v ?
are you ok? Missing your videos!
If you are to close this channel please let us know we missed your good job
Please dont close it this a learning channel come back soon
Good job. but, how can be that part broken like that in the 1st place? >.
Nice fix sorin i would be telling customer its temp fix and let him know board snapped as usb n sd card reader wont work, of course he will need too pay the parts n labour..
good one ...
Hi. I'm writing here because dont replaying :). Could you make a video or explain about CPU and GPU power controling. Because have asus s200e starts and no display(display tested and working). All power reels have voltages except one which drive GPU. Have preplaced IC chip which drives GPU and still nothing. What I shout test? Thanks mate for answer. :)
sir where are you .. missing you 🙏
That board seems to fail quite often so you can easily find a replacement on ebay.
I know you fixed so at least the customer can use it but it's a recent and pretty recent laptop.
love it :-)
When you press the power button while measuring it I think if the power button was indeed working it would go from 3.3v to 0v
I'm not sure but it is what i think it would happen.
I had a vostro 5470 took to the technician and he just told me there was nothing that could be done only changing board. The diagnostic was it couldnt recognize ram module. It woudnt even turn on.
I used to use a one of those and the plastic is crap. It flexed too much and the case started to break
When will new videos come sorin thx
Sorin we need a new video pls ;) we are addicted to you. You hurt us ffs :P
Sorin where are you????? I miss you and make me to care! Please send me a Answer
i have a motherboard which is shorted to ground. the problem is after the 2nd mosfet. i applied amps to the circuit, the chipset gets hot. any advise from you guys about how to proceed???
. thx for your help
Zubair MH maybe a shorted chipset
I believe the chipset is faulty as said.
You can always put a cooler on top of it, and try to search for other heating areas.
Try to disconnect VCC from the chipset, that is tricky if you don't have a manual or boardview and try again.
If short goes of, you know is from the chipset.
If short still remains, it can still be because of the chipset since there are still things connected to it.
Remove the bios battery as well, since its connected to it.
its indeed very tricky since its an acer vn7-593g motherboard with an i7 7th generation and the schematics is not available online. I have disconnected all the coils near the chipset on the motherboard, still the chipset is heating. i think its quite difficult to do anything about it...
Reballing a new chip is an option but you need special machines to do that properly.
"vn7-593g" is what it says on the motherboard or this is just the model itself?
Acer aspire VN7-593G
muito bom
Magic hhhhhh
Perfect
HEY where are you? i miss u and plz upload new video i m waiting for u
Hot glue ?
lol i just clicked on your wife's channel coz i forgot what it was, (the gaming one) nice rifle i also have a HW100kt but not with the nice laminate stock :)
Sorin plase come bac 🤔🤔 what happen ??
Laptop doesnt have 3 or 5 v on motherboard. Could you give me some contact to repair it "on line, live" :)
I sir where are you sir.. Pleace help 3.3 voltage is ok but not on..
why not put some of that hot glue on that cracked board ....?
ha ha hot wiring a laptop :-D.
It shows how fragile modern laptops are, the older types had the button nailed down and supported.
I think a big ape has been stabbing that button with his massive fingers.
USB? SD Card Slot? Couldn't order power button board on E Bay? Total repair! No?
hi sir. sir i sent you email about my huawei p8 mob. but you still not answer. please sir give me reply of my mail.