The power capacitors have likely blown on it. You'll need to repair under warranty or get a new TV
SOURCE: 27" Advent Flat Screen TV: Picture Missing but can hear sound
High Voltage. Check fly back Xformer.
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: No picture, sound ok
I have a similar issue. Sometimes the entire screen goes black and sometimes only one-half - either the top or bottom half goes black. The only solution we have found is to gently tap the TV (usually the front side) and the picture will come back for awhile. It almost seems heat related as it only goes out after the first 10 minutes of use. There must be a fix to this.
SOURCE: LG Flat Screen TV has no picture, but sound
The times my TV at home has done this it is because I'm tuned to an HD source and my TV doesn't have HD. Or vice-versa, I tune to a regular channel and I have the TV set to HD.
If you have NO picture, like the channel number or volume bar don't appear, then this isn't the problem at all.
I would say check the Video (Yellow) cable in the back, or try setting up and playing a DVD and see what happens. maybe cycle through video modes, Digital etc.
If none of this helps, comment on the post and we can exchange more information.
Good luck!
SOURCE: 47" Vizio Flat screen HD LCD freezes up and remote will not work.
could it be Ch 9's digital signal is not broadcasting right? what is your refresh rate on your tv? 60 or 120hz? if its 120hz, then its more then likely the digital broadcast, if its 60hz I think its your tv can't keep up with their signal that may be at 120hz. Make since??
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