Our Samsung TV has no sound. We ran a sound check and there was sound then but when you turn it back on there is no sound.

Hi there
I would go to menu on the remote , from there to picture go down the list, if you do not find anything there to help you. Go to Support and to the E manual .
Kolbrun

if you are technical check the sound module the IC is blown you can get the same from any electronic component retailer and replcae

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

common problem, trouble is that the receiver cant keep up with the dvr box. try this, dont use audio from your dvr into your reciever, take the audio out from the tv, and go into the receiver, now the sound is after the picture and should catch up with itself.

check for swollen capacitors on pcb.

probably a bad T-Con board. this board is the interface between the panel and main board. call 1-800-samsung for nearest service center.

Check the color wheel because that's usually the culprit when the set starts making that whirling sound.

you changed all the eprom info but didn`t "save to ram" before un-plugging ac cord, you will have to call a tech and be sure to advise him what you have done so the tech will be sure to bring service manual, info will have to all be re-entered, video-tek

When the TV is on, need to check the back light is on(go back side & look into through)

If the back light is on -- need to exchange the Main Board
no back light -- exchange the Power Board --- 95%
exchange the LCD panel --- 5%(inverter)

Try to resoledr on the deflection pwb assumbly and check