Was watching my 42 in plasma; Panasonc TH42-DW5 is the model. No longer under warranty purchased in March 2004. Worked fine until yesterday; screen went black red LED light is blinking. Can hear a humming when I turned the television off and then back on but got the same results black screen; blinking red LED light.
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Re: Screen went black
I am working on one right now with a similiar problem. The power supply is bad in the one I am working on, and sadly, the part is not made anymore. I hope you have better luck than I am finding the bad component in yours. Sorry for the negitive answer.
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If the menu display isn't coming up either, then the odds are the power supply for the screen is the problem. Most manufactures call this a Backlight Inverter Board. Being that it's only 7 month old, it should still be under warranty by the manufacture. I would try to get it fixed by the warranty first if possible.
NO....You must pay attention to all numbers on the back of the TV. Verify these with your tech or contact your LG customer support for the correct board numbers. If the screen was broken I doubt if you can repair this for less than it cost to replace. The screen for this one runs at about $650.00. Good Luck and good advice!
A plasma screen uses thousands of tiny fluorescent bulbs in different colours (red blue and green) to produce a picture. Just like standard house hold fluro lamps, these tiny bulbs use starters to turn them on and off. As there are so many bulbs in the panel and therefore starters, the panel has a number of "starter controllers". These controllers can control anywhere from a quarter up to half of the screen. If a controller dies, it takes out it's segment of the screen. Unfortunately, it sounds as if this is what has happened in the case of your LG - this is also common in NEC and Fujitsu panels. Althought these controllers can be fixed, it usually takes more time and money than it's worth- unless you have it under warranty in which case the manufacturer will just replace it. Sorry top be the bearer of bad news. hope it helps
The most likely the TV has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board. I can't say it's 100% the problem because I can't actually look at the tv over the internet. If by chance the TV is still under warranty, go that route. If not under warranty and If you have some electronic experience, you can purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, test points, and part# lists. Usually, cost under $20.
That problem is the Ysus board, Sometimes people will replace the Zboard at the same time. If you bought it at costco a couple of years ago you are in luck costco will refund your purchase price, costco has changed the return policy and newer tv's are not refunded, but something to look into
I have samsung 40" LCD tv and it's happening the same thing. I turned it on and it last for 5 minutes and the screen went back but the audio is fine. I turned off and turned it back on it worked fine but an hour later it happen again.