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(HELP)LG Flatron w2453V problems

post #1 of 5
Thread Starter 
I'm having an issue with this monitor in that when it gets powered down or sleeps for a while and gets cold, it will then refuse to turn on. The power sequence will start, and the menu LEDs will turn on, but will abruptly shut off. I unplug the power and input, wait a little bit, and re plug in the power, and it does the same thing. I've gotten it to work in the past by continuing to plug and unplug the power from the back of the monitor every few minutes for a couple hours, and eventually it will get to the "check signal cable" screen, because the DVI is still unplugged. If I plug the DVI in when it shows that, the screen will turn off again. Alternatively, I have to leave the monitor with that screen on for another couple hours, so that it "warms up" and will then accept video input. I've tried different power cords, different outlets, and different DVI cables, but nothing changed how the monitor acts. I also tried opening up the back of it, but couldn't figure out how to get the panel off. I found 2 screws and didn't see or feel any more.

It's out of warranty(purchased roughly 23 months ago) and I don't have the money right now to send it in for repairs or to buy a new monitor.

Please help! Thanks!

Edit (Dec. 29th): We lost power in a storm a couple weeks ago and the monitor hasn't been working since, because it was turned off for 15+ hours. I took the monitor apart today, and got to the main power circuit board thing. I can't see any obviously damage, but I'm no electrician. Though 3 of the cylinder things in the bottom right of the picture I took are looking very suspect. My uncle IS an electrician and I am going to have him look at it, but in the mean time I ask for help again. Here is the picture. Picture
Edited by Swae - 12/29/12 at 8:02am
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post #2 of 5
Thread Starter 
Updated.
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post #3 of 5
You have a very common case of bad caps! :-) The 4 capacitors - C203 C206 (I think its 203 206 - hard to read n the picture) and the two below them, are swollen and almost definately faulty. From what I can see, the rest look fine. Just replace these 4 caps with ones of the same µF value / voltage and I think it'll fix your problem.

More info here - http://www.badcaps.net/pages.php?vid=2
post #4 of 5
Thread Starter 
I went in with a flashlight and two of them are 1000uf 16v and two are 470uf 35v.

I found these and these for pretty cheap. I can't find anything on the dimensions, though. The ones on the board are 10mm diameter and 20mm height.

Alternative I could get a "capacitor repair kit" for the model of my monitor from ebay for around $15, but has a lot of extra stuff that I don't think I need.

Edit: or like these and these for cheaper shipping. Would the higher voltage on the 1000uf be alright?
Edited by Swae - 12/29/12 at 12:49pm
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post #5 of 5
It's absolutely fine to go higher with the voltage - it actually gives the cap more headroom with spikes. The only problem with doing that is usually the physical size of the cap is bigger too, but if it fits, there is no problem in using higher voltage caps.

I'd avoid those amazon ones, they look really cheap - probably no name poor quality caps - the cause of your problem in the first place.

The ebay ones you linked to will probably be better - just make sure the lead spacing is the same, and they're not too tall. I've had issues fitting taller caps sometimes, so its worth watching. But basically, if they're the same value, at least the same or higher voltage rating, and you can make them fit, they'll do the job. thumb.gifbiggrin.gif
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