+poikaa3 Yup, you're correct. I probably should have replaced that one as well. It seems to work well without it (has been working for over a year now). If it had not worked at first test, I would have replaced that one too.
There's simply NO REASON to dislike this and am very pleased that so far there are likes only. Very helpful video, thank you A LOT! As a first-timer to this kind of repair one does need to search for the best explanations as possible.
Likely capacitors as he said. Same happened with one of my old monitors. After a few weeks, it went from lasting ~45 mins between cycles to ~2 mins and it got harder and harder for me to get it to come back on at all (towards the end, I'd often have to toggle the power button 5-6 times before it'd actually turn back on). I actually found this exact video, took his advice, replaced 3 caps, and it was good as new. I'm back here today because my girlfriend's work monitor is acting similar and I was linking her this video to better explain it to her. Her job replaced the monitor and was going to toss out the bad one, but instead it looks like I'll have a fun little project to play with tonight and likely snag a spare 24" LCD backup monitor to keep around for literally just a few dollars :)
Thank you so much for making this video. I found this monitor a few months ago and just recently its backlight went out. I saw your video and found the same diagnosis and fixed it the same way and now its working. Hope it will last long, thanks again.
That metal tape that's was on the left side holding the cables what is it? It was on my monitor holding the box for the power circuit board. I am planning on adding electrical tape to hold but it doesn't keep a good hold.
Does the capacitor need to be discharged prior to removing for LCD monitors? I was always told not to mess with monitors (back in the CRT days) because the capacitors will hold enough charge to injury/kill you.
+Karl Baker No, these capacitors are very small and don't hold much charge. It's ok to remove them without discharging them. However, if you still want to, you can always cross the capacitor leads with a metal screwdriver tip to be sure.
It might have been a little bulged, but I guess I didn't think it was bad enough to replace it. Keep in mind, a capacitor can continue to function even if it's bulging. But once it starts leaking, that's when it begins to fail. That's why I replaced the ones that looked like they were in the greatest danger of failing soon.
Thank you for sharing this information. I've got 3 Acer X263W monitors and one of them began going to a black screen within seconds of turning it on. I took it to a shop and I do not believe he did a thing to it. He said it was a bad screen. I've questioned that, since it will come on and display for a second or so. My thinking was if the screen was bad, why would it display at all? Anyway, I'm going to open it up myself and see if I find any capacitors that look to be bad. I've never done this before, but after your example, I feel sure I'll have no problem, should I find one (or more) that needs to be replaced.
Based on the symptoms you describe, it sounds like this technique may work for you. Usually, it's the power supply capacitors to the LCD backlight that start to fail, so the backlight will light up for a few seconds and then go dark. If you see the display during those few seconds, that means there's nothing wrong with the screen. Hopefully this will work for you...best of luck!
You should just replace all the capacitors on the secondary side. The other capacitors, being of the same brand and doing the same job, would likely be close to failure too. Make sure you replace with low-ESR capacitors with the same capacity and same voltage. It is ok to go up one level of voltage to save part count, but not too high and definitely don't go lower. Do not use general purpose capacitors, in this situation they can fail quickly like the originals here. Also take note of the physical size of each capacitor. You are pretty lucky here in that the capacitors had plenty of space around them and fitting a bigger physical capacitor doesn't cause a problem, but many power supplies will all the capacitors jammed together. (I guess this is common sense though) You can get good quality, Japanese sourced capacitors from places like mouser and RS online. For a long term fix these are best, however, it is up to you. 22inch monitors are kind of old and not much point fixing unless it is cheap and easy. I prefer to spend a little more to make sure my fix sticks, but up to you. If you do not find bulged capacitors on the primary side (or you test them and they test good), or replacing the capacitors doesn't fix it, you should probably just remove your new caps and throw the monitor away. Not much point spending hours trying to fixing an old monitor with non-trivial problems that can be replaced for $100 or so.
I've sold a few of these repaired monitors for $50-$75 each. Considering I put in $4 in parts and 30 minutes in labor for the repair, I definitely consider it "worth it" to fix these monitors! Also, I test the caps before replacing them. No point replacing caps that haven't failed.
Hey , man thank's for that usefull and instructive video , tho i wonder what are the sign of a failing / dead capacitor in a LCD Screen , i wonder because i actually own a BenQ XL2411T and this thing actually won't let me use more than 60 hz ( this is a 144hz monitor ) , if i push the limit i need to actually " heat up " the screen to actually get a image , before it's just white and blue colors before the image take place :X Thank's in advance for your answer , and keep u good videos coming o/
my lcd monitor works fine for 25 minutes but after every 25 minutes screen goes black...then i restart my monitor again its works fine for next 20-25 minutes... what is the problem sir...please help ..!!
Just got my monitor working again thanks to your video! Thanks a billion my man, you saved me about a hundred bucks.
The 4th capacitor to the left of the one you replaced looked to be bulged in the same way.
+poikaa3 Yup, you're correct. I probably should have replaced that one as well. It seems to work well without it (has been working for over a year now). If it had not worked at first test, I would have replaced that one too.
There's simply NO REASON to dislike this and am very pleased that so far there are likes only. Very helpful video, thank you A LOT! As a first-timer to this kind of repair one does need to search for the best explanations as possible.
bogroman13 Thanks very much!
+bogroman13 could have been a mistake.
Thanks for the video Facethewing,
Likely capacitors as he said. Same happened with one of my old monitors. After a few weeks, it went from lasting ~45 mins between cycles to ~2 mins and it got harder and harder for me to get it to come back on at all (towards the end, I'd often have to toggle the power button 5-6 times before it'd actually turn back on). I actually found this exact video, took his advice, replaced 3 caps, and it was good as new. I'm back here today because my girlfriend's work monitor is acting similar and I was linking her this video to better explain it to her. Her job replaced the monitor and was going to toss out the bad one, but instead it looks like I'll have a fun little project to play with tonight and likely snag a spare 24" LCD backup monitor to keep around for literally just a few dollars :)
Thank you so much for making this video. I found this monitor a few months ago and just recently its backlight went out. I saw your video and found the same diagnosis and fixed it the same way and now its working. Hope it will last long, thanks again.
Straight to the point in a clear way. This was very educational, thank you!
Fixed my monitor by replacing 1 capacitor :D saved people so much money by making this video thank you.
That metal tape that's was on the left side holding the cables what is it? It was on my monitor holding the box for the power circuit board. I am planning on adding electrical tape to hold but it doesn't keep a good hold.
mine has similar problem, but after opening it up i dont see any bulging capacitors
I replaced the caps that were bad in the same monitor but I have the same problem. Where should I check next? Thanks
Does the capacitor need to be discharged prior to removing for LCD monitors? I was always told not to mess with monitors (back in the CRT days) because the capacitors will hold enough charge to injury/kill you.
+Karl Baker No, these capacitors are very small and don't hold much charge. It's ok to remove them without discharging them. However, if you still want to, you can always cross the capacitor leads with a metal screwdriver tip to be sure.
Very useful video! Btw, when you showed all the capacitor, the tiny one of the top left side also looks bulged. Any reason that was not replaced?
It might have been a little bulged, but I guess I didn't think it was bad enough to replace it. Keep in mind, a capacitor can continue to function even if it's bulging. But once it starts leaking, that's when it begins to fail. That's why I replaced the ones that looked like they were in the greatest danger of failing soon.
Thank you for sharing this information. I've got 3 Acer X263W monitors and one of them began going to a black screen within seconds of turning it on. I took it to a shop and I do not believe he did a thing to it. He said it was a bad screen. I've questioned that, since it will come on and display for a second or so. My thinking was if the screen was bad, why would it display at all? Anyway, I'm going to open it up myself and see if I find any capacitors that look to be bad. I've never done this before, but after your example, I feel sure I'll have no problem, should I find one (or more) that needs to be replaced.
Based on the symptoms you describe, it sounds like this technique may work for you. Usually, it's the power supply capacitors to the LCD backlight that start to fail, so the backlight will light up for a few seconds and then go dark. If you see the display during those few seconds, that means there's nothing wrong with the screen. Hopefully this will work for you...best of luck!
Seems like this is a good way to make a come up lol. Get some broken monitors, do this, and sell em lol.
You should just replace all the capacitors on the secondary side. The other capacitors, being of the same brand and doing the same job, would likely be close to failure too.
Make sure you replace with low-ESR capacitors with the same capacity and same voltage. It is ok to go up one level of voltage to save part count, but not too high and definitely don't go lower. Do not use general purpose capacitors, in this situation they can fail quickly like the originals here. Also take note of the physical size of each capacitor. You are pretty lucky here in that the capacitors had plenty of space around them and fitting a bigger physical capacitor doesn't cause a problem, but many power supplies will all the capacitors jammed together. (I guess this is common sense though)
You can get good quality, Japanese sourced capacitors from places like mouser and RS online. For a long term fix these are best, however, it is up to you. 22inch monitors are kind of old and not much point fixing unless it is cheap and easy. I prefer to spend a little more to make sure my fix sticks, but up to you.
If you do not find bulged capacitors on the primary side (or you test them and they test good), or replacing the capacitors doesn't fix it, you should probably just remove your new caps and throw the monitor away. Not much point spending hours trying to fixing an old monitor with non-trivial problems that can be replaced for $100 or so.
I've sold a few of these repaired monitors for $50-$75 each. Considering I put in $4 in parts and 30 minutes in labor for the repair, I definitely consider it "worth it" to fix these monitors! Also, I test the caps before replacing them. No point replacing caps that haven't failed.
Awesome! I just fixed my LG W2252TQ for my pc and saved about 200euro. Thank you!
+qStraq q Excellent...glad to hear it worked for you!
I also found a Samsung monitor with the same problem, I will do this method and hope that it works! Thanks for the tutorial!
Hey , man thank's for that usefull and instructive video , tho i wonder what are the sign of a failing / dead capacitor in a LCD Screen , i wonder because i actually own a BenQ XL2411T and this thing actually won't let me use more than 60 hz ( this is a 144hz monitor ) , if i push the limit i need to actually " heat up " the screen to actually get a image , before it's just white and blue colors before the image take place :X
Thank's in advance for your answer , and keep u good videos coming o/
holy crap, very aesthetically similar boards in DELL 17" monitor xD
my lcd monitor works fine for 25 minutes but after every 25 minutes screen goes black...then i restart my monitor again its works fine for next 20-25 minutes...
what is the problem sir...please help ..!!
Could be a similar problem with the power supply's capacitors. You could open it up and give it a look to see if any of them are bulging or leaking.
thanks
who is kicking monitor in trash?
Ok video but you should have replaced ALL them caps of that brand they are trash ;)