No picture or sound on LG 42" Plasma

With a problem like this, I would use the warranty for the TV.
It's possible a circuit board failure has occurred and the TV is automatically turning itself off to protect it from further damage. Is normally called " Protection Mode " for most TVs.

Being that it's 2 months old, it should be under warranty regardless. I would recommend contacting the store of where it was purchased and have them help you with the warranty issue.

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

hi
its cathode ray tube problem or the colour wheel...check that both please.....
thank u,,,,,,

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.

Hav 50 inch lg no pic but got sound wtf how do i fix it an there r 5 flashes b4 green light stayes on at the start

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.

ysus pcb that supplies voltage to the panel is faulty

sounds like it may be a software upgrade

take off back panel and adjust the V12(A) adjuster wheel on the power board it adjust the gas flow to the screen is should light up your screen