Chekc and replace its back-light inverter board & CCFL lamps. google.com/+GopakumarGopalan
SOURCE: 42 inch LG Plasma TV - Lost picture
Our LG 50" plasma tv screen went black after a popping noise but still had sound, after great diliberations decided to take the back off and have a peek!
We unplugged the tv and tested the fuses (there were three we could see) one had blown, the one on the left as you look at the back of the tv it also has one above it. We wrote the code/seriel number down and took the fuse to the electrical wholesalers Maplin and bought a pack of 10 fuses for £1.29 replaced the fuse in the tv and everything now fine!!!!!!
Hope this might be of use to anyone whose lost the picture after a loud popping/snacking noise but still has sound.
SOURCE: problem with philips 42 inch plasma tv
if you go and download the new firmware it will take care of the red light problem. firm ware upgrade version 1.5.0.0
SOURCE: trying to connect nintendo wii to philips tv
If I have the right manual you should connect the wii cable from the package to th backside of the tv. You will see four pluges. Choose with VGA you want to use, this is not important. Use the cable from the wii and plug in two of three pluges, you must match te coulors. If you have a cable box installed you will probably have scart (a big cable with a large head) connect this and it would run smooth. You can also connect the three pluges from the cable to your cable-box, use the red, wihte, and yellow pluge.
SOURCE: 42 inch LG Plasma TV - Lost picture
This is almost certainly the device that sends electricity to the the plasma in the panel after failing. Bring to your local repair shop and expect to pay 300-400 parts and 100-200 labour.
Cheers,
Stephen
SOURCE: 42 inch LG Plasma TV - Lost picture
Most likely what happened is one of the capacitors went bad. When a capacitors goes bad it produces a popping sound. This could be an easy and cheap fix if you find the bad capacitor or capacitors. The bad capacitor will have a bulging top most likely on the power board but could be anywhere.
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