Question about LG L204WT Television

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I have a flashing blue light on the screen

I have a flashing blue light. I unplugged the screen and the problem returned. No screen view.

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This is a generic symptom that could happen to any LCD monitor.
The following is a generic answer applicable to most.

First check to make sure you're not over range. Unplug the monitor from your computer and turn it on. If you get any kind of a picture, and the light stays on for a while before shutting off or starting to blink, or if the display says "no signal" then there is likely nothing wrong with your monitor. Plug it back into your computer and try starting windows in safe mode. (tap F8 repeatedly until you get a boot menu and select safe mode). Right click on the desktop, select the rightmost tab and reduce the resolution using the slide bar. Reboot your computer and everything should be fine.

If you cannot get any display at all, then try this:
Open the unit and check to see if any of the capacitors in the power supply or other boards look domed or vented on the top.

Replace any capacitors accordingly. Use the same value capacitors. Most often, 1000uF 16V or 25V, 470uF at 16 or 25V, 220uF at 16V or 25V.

If this doesn’t solve the problem, try checking the surface-mount transistors on the inverter board that runs the lights. Sometimes these transistors go bad. Check the area for any cracked or overheated ceramic or mylar capacitors.

If you cannot do that or don't want to take it apart, bring it to a service centre for an estimate.

Posted on Jun 19, 2009

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Hi.
Are you able to see a slight image on it at dusk and maybe with the help of a flashlight. since your blue light stays on the video board, may be okay.
If you can hear audio then your problem should be in the inverter board.
It could have bad capacitors or possibly a burned out transistor.
There is a chance one of your bulbs is creating a problem, but you would usually see a flash of the screen if that were the case.
Even though you do have sound the power board could still be the culprit.
Only way to really tell is to open it up.
If you unplug the screen to video board ribbon, you may notice a different effect in the screen lighting.
Should the screen happen to light up all white, then your inverter is okay.
If it looks pinkish or dark or flickers then the bulbs or a bulb may be the issue.
ebaysbammbammfran

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