Need help This plasma tv come on but some hours it lost sound i really don't know why that happen.

The main power supply regulator board has the fault. Check if any electrolytic capcitor/s has bursted out. Replace them if any. If this do not help you. repalce the board as card basis.
Replacing it as card basis is fine, rather than making 'surgery' to it.

Yes, you can play PS3 on your plasma TV without worrying about "burn in" problem. Just don't pause your game for a few hours.

I hope this helped.
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Thanks!

-damneddle

Most likely. It is probably in some kind of protection / "get me repaired at a really high cost" mode, this would explain why you had sound until you restarted it and it ran a brief diagnostic.

I don't think you'll be able to claim this on warranty as it is accidental damage, not a manufacturing error, but you never know! Maybe your home insurance will cover it.

Call Samsung and see what they say, the might be able to repair it for you or quote you the cost of a replacement.

Thanks
Moza805

Plasma TV's have a shelf life. By that I mean the screen is only good for so many hours depending on the model. Most likely, you have burnt out the screen and the set will need to be replaced. The good news is, plasma TV's used to be better than LCD but that is no longer the case. You can get a very high quality LCD TV for a very low price now. Also they use a fraction of the power and don't generate all of the heat of a plasma.I'm sure this is not what you wanted to hear but the reality is that ALL plasma TV's do this eventually, and it is something that most salesmen back in the day didn't bother to tell customers. If you have an extended warranty, you may be able to get it replaced.

Sounds like something you will need to have the professionals diagnose, because that seems like a very uncommon error with that line of TV's. Sometimes TV's just go bad, and need maintenance, especially newer TVs.

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

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.

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.

I knead the wire for the spikers I losted and is imposibe to get sound on my TV plasma esa 42"