Hi i have an lg 37lh3000 the picture color has gone very dark with shadowing any help would be good thanks

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: Green shadows in dark scenes

You should contact Service Center to resolve this issue.

SOURCE: 42 LG Plasma picture distorted and flickering

replace the control module.

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: picture too dark

Capacitors on the Ysus is bad. Buy a new Ysus board or change the 14 components on it from a repair kit