HOW TO FIX HP LCD, monitor turns off after 3 seconds (common repair)
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- Опубликовано: 21 авг 2024
- How to disassemble / open LCD & Fix turns off after few seconds, easy common repair works for HP, Compaq, Dell lcd too, reset won't work, CCFL backlight fix- solder loose wire but sometimes it can be blown capacitors in power board, this computer lcd monitor w1907 Please Share/like/Sub Get capacitors here-tampatec.blogsp...
Troubleshoot guide for LCD TVs & monitors
1) if locked- to unlock just hold menu till unlocks or refer to service manual for reset code
2) power light is on but no picture screen just solder backlight wire also fixes- no picture, black screen, turns off after 2 to 3 seconds, check inverter board connections and bad diodes
3) replace blown caps 100uf 10v, 470uf 10v, 1000uf 10v, 2200uf 10v, 3300uf 10v, this fixes- turns off after few seconds, on & off randomly, static picture, no power
4) color red blue green black bars- replace tcon board or tcon solder connections also fixes distorted picture but worse cases bad tabs on lcd panel.
5) no sound- check main board sound amplifier or solder connection on audio port
6) picture flickers- bad tabs on lcd panel, loose solder connection on video inputs, loose tcon cable connection
reparación lcd
Common fix for HP LCD, i worked on this video all night i hope it helps someone. please like/share/sub
get lcd caps here- www.amazon.com/Samsung-CAPACITOR-desoldering-CAPACITORS-Replacement/dp/B008PWWS32?tag=tampfreepcpin-20&linkCode=w13&linkID=&ref_=assoc_res_sw_result_1
#lcdfix #commonfix #easylcdfix #lcdrepair #lcdservice
Very nice video again, do you have a video where the lamps are ok and you check the Power board capacitors? thanks so much.
I think I'm gonna buy another computer
+sl2k4u +1 : high voltage inverters can be faulty too, I am trying hard to figure which can be : bulbs, inverters, capacitors ... Even with measuring devices.
+RegneGames Hopefully you figured out the issue by now, but different issues can provide differing effects... Sometimes when the inverter is bad, you'll see a pink hue prior to the screen or backlight turning off. With caps in the power supply you'll end up with issues such as an audible alert if the monitor has speakers, lights turning on / off, monitor not turning on, etc... With the backlight shutting off shortly after the monitor turns on, it can be the bulb or electrical component related.. In this case because the connections were "burned" away, there was still a connection but after applying current, the wires were able to sustain it for only a short time...
This may be the same issue I'm having with one of my new monitors; I have 3 I'm waiting for caps to arrive in the main and a new one I got where the backlight shuts off in under 1 second... I'll double-check the connections on the backlight when I go through the disassembly phase. Cheers.
+Tampatec my hp 2310 just went out, do you want to fix it, I'll send it to your place, and you tell me what is wrong with it then we take it from there.,
there was some lines on the right side last night, and for the past week there was some low frequency flickering in the monitor. then went out black, as someone shut off the lights.
Just wanted to say a giant Thank You! I just used this guide to repair an HP 2509b monitor.
I was very skeptical because both lights were going out, but fixing the burned area on a single bulb unit seems to have done the trick.
All the best!
Awesome! Congrats fixing your monitor 👍.
How did you fix the burned area, because it means there is an open in the bulb?
This is one of the best how to videos I have ever seen.
I found this very useful. This eliminates the possibility of bad capacitors. You could easily apply this theory to some issues on certain LCD monitors. I'm not saying it could apply to all, but it could help to narrow down the problem a lot easier. I'll take this into consideration. Thank you for this tutorial.
cool thanks!
Same here, i'm looking for a faulty capacitor and discover this video. Many Thanks @TampaTec !
Thanks bro, you helped me save 9 monitors for my home setup. I just needed the tubes. What I learned is my tubes were fine after 16 years on HP 1730. What fails on this model is the output coils secondaries. The low height transformers that are about the size of a stamp. These are hard to find so you might have to rewind them. Old HP were built like tanks.
This video was very informative. My model would stay on for 1 second then turn off. If I had the monitor in the right lighting I can barely make out text, so this led me to believe it was a backlight issue. I was able to make my way into the settings>brightness section and decreased the brightness. I then turned off/on the monitor and it worked. Not sure how long it will last now. But one thing is for sure..the monitor's capacitors (as stated in this video) are more than likely busted.
Thanks for the tip on the burned out wire. I took the disassembly slow, but got it done without breaking anything. The monitor is back up and running.
Thank you! I've been trying to solve this for a month now.
Perfect! Quick with no no extra junk. I just fixed my 22" acer with this problem. Just note that with acer the light test would still turn off after 3 secs - it turns off automatically if no signal detected....
Thank you For this video!!! Found a cracked CCFL was the issue. very helpful, and for all the people complaining about damaging their LCD Displays, you knew better than to mess with this. If you dont know what you are doing, dont try it. LCD Screens arent as fragile as other types, but definitely need careful handling.
Some say he's still trying to put it back together 😂
As always.You are right on the money, and I applied this method to my Emerson LTDN42V68US LCD TV. Thanks a mill, and keep it going for the ams like myself
I wish i could just bring my monitor to you on screen LOL xD
I bought an ASUS VTG248QE 3D 24" monitor to save time. But, your video inspires me to fix my old HP 1259m monitor to use on and older computer at some time in the future. Thank you for a brilliant fix. I hope I can be as patient to do the job as you.
I have a 26" Vizio it turns on and the picture comes on the screen but then the lights just goes out after like 3 to 4 sec. the image is still on the screen but you have to flash a light on it. I thought it could have been the inverter but could it be the led lights like on this video?..
Still helpful after all these years. The 3 second issue, and no visible cap issues, caused me to explore into the LCD. Sure enough the ribbon attached to the actual LCD separated, and I was done, but found the source of failure and Ozone smell as a shorting to the metal bulb housing on just one. Any vids on that repair. Could never get even those exercise bike B/W LCD ribbon to reattach, with heat.
Subscribed. Tomorrow I´ll fix and AIO thanks to you.
i replaced every single cap in the power supply for nothing. Found this video and checked the bulbs, and sure enough its the same problem. THANK YOU!
Another awesome video bro! Thanks for sharing your knowledge, you've helped me fix a crap load of TV's in the past few months! Definitely saving me cash!
cool
oh yeah, but he also shows a lot of how to vids for common tv fixes too and they have really helped me repair quite a few of them. This guy really knows his stuff! This video in general helped me repair a similar model monitor as well. If you're looking for repair knowledge then tampatec is a treasure!
Thanks man! Its super useful and clear. Cheers from México
Great!!
it worked, two leads were burnt.
but now screen goes blank after few minutes. power off and power on brings it back, it repeats.
vga cable re insert will also brings back
Same problem with my Samsung Lcd, did you get any solutions.??
Interesting video. I have a Hannsrpee 25" monitor that is coming on and going off. At first it was on for half a second and I replaced some caps and now it stays on for 8-10 seconds. Since I have it apart, I think I will check the backlights, as I know that is what is wrong with it, because I can take a flashlight and shine on the screen and see a picture. Thanks for this. I'll update when I take it apart further and see what I find.
I should have looked this up before throwing mine away. The good thing is someone got it and they may fix it, and I got a freesync monitor now. I needed this kick in the butt to upgrade.
Thanks for this very very useful video. After a detailed inspection on the supply board, there was no error. Then I open screen and it was exactly this problem. Samsung T220HD
Tnx for tutorial i just fix my canyon 19inc lcd.Same problem picture turn on then off after 2 sec.Really helpful tip tnx again.
Thanks for the video. I just got around to try to fix my monitor. It turned out one of the light bars was burnt out so in the trash it goes. But your video was very helpful.
Hanns-G HH221 No video after replacing 7 Capacitors
Let me begin by saying that recently this Hanns-G computer monitor started experiencing only staying on for like 2 seconds, there was video and audio from HDMI, there was a slight zap like sound from the back but no other issue, after checking around I learned this is a fairly common problem with bad capacitors, I examined them and found none to appear bulging or burned but seeing how this was the least costly repair I decided to replace the ones that are recommended replacing. So I just replaced 7 capacitors as recommended by the seller I bought them from on ebay, I made sure they were installed properly with the negative side, short lead correctly, made sure no solder overlapped to short anything on the circuit. I put back the CCFL and re-attached the Power board to the video display board, turned it on and now The green light shows there is a signal it stays on when the HDMI cable is removed the light turns yellow like it should,Windows shows the monitor is connected, audio is working through HDMI the zapping sound is gone, but there is no video whatsoever, I mean I shine a flashlight on the LCD and I can't see anything so that kind of rules out the backlight. I also tested it with VGA and same thing no video. I can't figure out what went wrong, I have checked and double checked the Video board cable, the CCFL connectors and nothing, the only thing I can figure is that that it's either the LCD or inverter is now gone and if that's the case I'm done as it's just gonna get too costly to fix. If anyone has any idea what's going on here and what might be the cause please help. Thanks
Hi! were you able to fix it? thanks!
Mine just started to do this. Same monitor. Hopefully i'll be able to fix it. Thanks for the video!
i'm impressed that there isn't a million screws to it', 'a prye bar an 2' screwdrivers',an 1 driver did most of the work' ''that's bless'''.
Always enjoy you videos and the info they contain. I look forward your new videos in the future thanks
thanks for this video. I tried this. checked the wires of the ccfl and they were fine. checked the caps too. seems good to me. so I tried plugging in just the ccfl bulbs just like how you tested it in the video the the lights continue to work. but when I assembled it again, the problem still exists. And to add up, the LCD now only displays white. I will try to check again when I have free time.
Like the video. My infrequent use server monitor fell on the floor once. Didn't notice any issues at first. Month later I have the 2 second problem. I opened it up. It's a very flimsy mechanical design but the PCB boards are solid and I couldn't find any suspicious caps on the power or video board. I didn't look into the light bar. I am curious: Would an intermittent connection cause a specific timeout in the power to the lighting?
Sorry I forgot to mention I have the HP 2009m monitor. And thank u so much for this video. :)I accidentally broke one of the ccfls. Where do I purchase another one from? Where's the part number? I'm not familiar with replacing ccfls.
thank you this is so helpfull
Nice Tip , helpful video came across this several times . Easy to fix once you know , I think this is caused due to the heat of the CFL and perhaps the wire sheaf ( outer protection ) melting
Nice video, pretty useful but small suggestion - show that the monitor is not working before you fix it :)
Great video you make it look easy however Im not confident enough to dismantle my TV so will have to take it to a repair store. How much would you roughly pay to get it repaired? I dont want to get ripped off.
Awesome work. Thanks for posting the video. Great help. Great video.
Nice work! What to do if my monitor is not turning on? I replaced my capacitors already? Not sure what else to check?
nicely done, I wish I'm patient just like you on putting them back together again :(
I have a Sharp LCD monitor when I plug the vga cable from a loaded windows CPU it display the windows screen for 1 sec and goes black, also when turning it on. But looking closer at the screen I can see the icons it's just too dark, like off. Do you think this video relates to my LCD monitor's issue? Thanks.
I have exactly same issue with my LG monitor. Were you able to resolve the issue? Thank you
great video as soon as i pick up some solder ill try it out
Ang galing nmn..sana all my loptap
cheers mate followed thru and worked aswell
thanks thats a simple way to fix this kind of problem in a monitor
Thank you for a great vid. I particularly appreciate you fast forwarding through the disassembly, on my side of the swamp data transmissions make a hole in your pocket and most tech videos can be unbelievably painful to sit through. I'll be visiting your other contributions. All the best !
before trying this , heat up your monitor ,it worked for me
Thanks brother... To solve this problem.. Same problem as here..
Thanks for sharing information on repairing monitor, it was very helpful.
Thanks bro....very good i'll try it at home with my old hp pavillion.....
Nice job.well done. Mine is hp vp17 turns off when get cooled it becomes ok.firstly I am not able to open back cover.Nice to see ur video.,looks
Complicate ....????????
TKQ
same problem, but the ccfl lamp are too fagile and i've broken one until i tried to remove the rubber boot! So...i replaced it with led stripes and adding a 12v power supply inside (connected to the same connector of the monitor supply)...it works!! :D (not the same backlight but it's enough!)
where did you get it???
ProXgamer 730 i found it on ebay...check the tickness and the width of the stripe. the led have to be 6000-6500 k light to be naturally white
Thank you, again, you make cool videos, please keep them coming
thanks, you got it
@@TampaTec Hey I have this monitor but it doesn't turn on at all I can heat it powering up so there's power but the screen don't come on at all and the led on button at the top doesn't light up either. Do you know what would be the issue with this?
dell is just beast lol no problems like this a 1911p lcd thats like 2009 monitor still works. i have it on 24/7 sometimes hahah
Hi, Thanks for sharing I learned something from all your videos, very helpful.
I have this problem for 2 monitors Philips and Benq and I changed capacitors and it is still turning off after some seconds. Everything seems to work. And I used lamps from another monitor and still same and this lamps work on other monitor so I don't think they are the problem. Please help, Any advice?
Thank again and waiting for new videos!!!
I found my problem as I saw bad lamp I just decided to remove it, but circuit saw a bad lamp and goes off. So I need four plugged lamps to work.
Hi. Can we use the multimeter to test whether the backlight bulb is good or bad? Is it correct that if the multimeter test leads (ohmeter) are connected to each of the pins of the backlight bulb, the meter should show low resistance or the opposite?
Thanks
How common is this issue? The monitor you are working on is one im looking at for my computer as a replacement
Omg thank u thank u I got my dell 21 inch fixed thank u !
Thanks! Very helpful. I look forward to trying your recommendations.
Are the four backlight CCFL connectors wired to power 1/4 of the display or are two powering the display and two used to control the intensity of the backlight and if so, which is which? As in which color wires are the power and which are the control, or are they all power?
*ATTENTION:* Notice the burn marks on the end of the tubes? they are close to end of life. Better to just replace the tubes while you have them out. Those probably won't last but a month or two longer.
hey man thanks on covering about the backlight ,totally subbed :),everyone else are on the same boring bulged caps hehe... i have a few question bt fore that ,did you know if you take a torch a shed light directly on the black screen you can actually see the desktop or watever it is being display after that 2sec dissapointment bt on a very dim setting ,thats how i accidentally discovered mine that it had a backlight problem and i thought you could used that info if you by chance havent mentioned it im not much of techie but iv done countless DIY, iv been too uninspired to fix it cos i wasnt sure how id replace or fix the backlight,getting a new one is not on my interest right now cos my other music project needs more funding n right at this stage of the recording i missed and i the need for 2 monitor i once is back,iv been using my note pro for my artwork which was to compensate the black screen lying somewhere now and i saw ur solution got me all excited this single huge lcd tv is not enough, okay enuff usless talk, my question is what if the backlight were beyond repair by your methods are there any possible fix,what are the other common problems and finally could i replace it with these back lght from a 17" lcd i salvaged from old lappies i got like three of them,2 sony viao,one acer/hp i think..thanks once again!
Hi thanks for your video, tomorow I ll try to fix my screen.
Thank you for the tip. I have the exact same HP monitor...
My HP W-2007 does same thing will it work for mine what your showing here?
Thanks love the video
Thankx i have a dell SE198WFP and its exactly the same thing inside, took it apart just like you show on the video and there it was burnt cable disconected from the backlight, so i bridged it and IT WORKED!!... for 5-8 minutes then it went off again!..dang it. why? im just gonna take it apart when i find a permanent solution..maybe you can help me..?
opened up an older HP model W22 ... one connection was indeed burnt through... can't remember which order the plastic sheets have to go (couple of them) before reassembling.
If the problem is indeed the backlight CFL, there is no need to dismantle the monitor further once that is exposed, correct? Seems like you had access to that fairly early in the video but continued to dismantle, why so? I know my hp monitor has this same backlight issue so I'm hoping I just have to go through a couple of the steps shown in your video to get to the backlight wire.
Hi! were you able to fix it? thanks!
Thanks, very helpful video. Looking forward to your next videos.
It is working now, thank you... :) exactly, one cable was loose... it took me more than two hours and I didnt believe that I put it together anymore when parts of monitor were all around my room.... :D
I did find where the wires are burnt on all three leads, thanks now if I can repair them. and maybe I can make it last one more year
Hi sir TampaTec, thanks for sharing. I've replaced all the capacitors in in my Viewsonic (its two boards) but it still turns on, then after 30 minutes it'll flicker in 8 second intervals? After the capacitors, with this symptom, what's the next one to check?
Thank you. God bless, Rev. 21:4
I have a 25" Hannspree monitor that goes off after a couple of seconds and I'm pretty sure that's what's wrong with it. I can hear a faint"squealing" sound right before it goes off. I can see a picture on the screen if I use a flashlight on the screen.
High voltage ceramic capacitors can also be the culprit. Besides the electrolytic ones. 😕
Interesting... I thought that these symptoms occur when the lamps are burned out.
Apart from this, the idea of glue is not good, because of the high temperature lamps at their ends, the glue will melt and flow.
Isnt there hi-voltage in modern LCD monitors? Are they safe to open and touch while testing? (I mean: except the 220v power transformator area, of course)
WOW that is a really smart fix!! Thank You for your helpful video. Happy new year Blessings :)
I suspect this would work for an HP LE2201w as well, as I have a pair of those that do the same thing, and may be able to get a couple more if I ask nicely.
hello +Tampatec mine is hp pavalion 22xi it turns off after 2 hours and i have to unplug it then the time becomes shorter is it the same problem . checked the capacitator on power supply board and they're fine ?! is it the backlight ccfl ? note the lower the brightness the longer it stays
It sounds like something is overheating. Could still be capacitors, they could be on their way out. They're cheap enough that you could replace them to be sure. It most likely isn't the issue shown here.
Thanks
very informative video...thanks for uploading..
brilliant Video, I have an HP Z30i, the back light is working but I am just getting a stripe about 10cms wide from top to bottom any suggestions please ?
That's LEd backlit I think, could be bad led strip.
@@TampaTec Thank you for such a quick response. I had the screen apart to this level and the back light was working, I will check again but wondering if it could be the T con board....
Thanks, very helpful video
Thanks for the vedio... just a question, I encountered a simila problem with LG Flatron w2242p monitor which swith off after three seconds.... Is it similar case to this vedio which i can troubleshoot it, or any possibilities there for me go about.... Please I need your ASAP...
Thanks Joan Toa
PNG
Great video, I will give this a try.
My LCD display keeps blinking on for an instant, then turning off for around 2 seconds, then blinking on again. Sometimes I can press the buttons on the monitor to make the LCD work, but with the backlight off. And sometimes if I spam the auto adjustment button, then the monitor will work fine for about half an hour before blinking on and off again. Help!
I'm shining a lamp into my monitor so that I can barely see right now. Not a very good long-term solution.
I have an HP LP3065 that, when power button is pressed, will illuminate the status LED green for a few seconds, then orange. Nothing onscreen. Makes a faint clicking noise when on. The computer sees it at the correct resolution. Do you think the backlight is the problem? Thanks for the tutorial btw.
Is there a way to reattach a TAB bond once it falls off 1 came off while I was disassembling the monitor?
شكرا
Hi is it possible for the Capcitor to make the screen not to light?
Thanks for your help
Hello,
I opened my HP 2210i monitor because I have no more images.
After taking everything apart, I realized that on one of the 2 backlight bars, the neon species are broken at one end (the one where there are the 2 wires). So I can't glue them back together or solder the wires again like in the video.
Also, I was wondering where to find the backlight bars to replace mine? The only reference I have is 1P-9CT91DFfN9 and I can't find anything on the web with this reference (even partial).
Thanks for your help and reply.
Have a good day
Thanks man 😊
Hi Master, I had a broken ceramic fuse "F801T3.15A/250VAC". But I can't find this type of fuse in my city. Could you tell me PLEASE, can I use the fuse ""F5A 250V or F4A 250V" instead of it ???
Thank you for the video that helped me fix the backlight but I still having the following message "No signal "on my screen.Any idea ?
No signal simply means that the monitor is not connected to a powered up video card or laptop output.
Bad caps in my case, easy fix
I have a ZR22w that has a perfect picture, but shuts off after 2 seconds, so it must be bad caps. I hope I can get it fixed, but the breakdown looks ominous. :/
My monitor used to go black after 3 min i changed the backlights but now it turns of after 10 min.
Al the capacitors are ok looking, none of them are blown.
Any tips ? I highly think it's the power circuit board
Hi! were you able to fix it? thanks!
You can detect that problem if you shine a bright flashlight on the monitor and you see what is on the screen than that is the problem, short on the back light
Can we use the tube outside of monitor and what volt use to tube?
hey Yo can you recommend me where I can get the Lights itself from ??? thank you
I did what you said everything worked out well, but now my monitor works only with the bottom lights on. The top light "bulb" cracked.
This is a very late comment, but is you respond: I also broke one of the bulbs did you find a way to fix it?
well done good sir