Re: WORKED FINE WHEN TURNED OFF, THEN NO SOUND WHEN...
1. I would first make sure that correct "INPUT" setting is registered. 2. Try a different input source such as VCR, DVD or CD. 3. Connect a pair of audio RCA cable to all the VIZIO set's audio inputs one at a time and touch the center tip while the set is powered ON and the input is set to the corresponding seting. If audio circuit is OK you should hear a hum with at least one of the input settings.. 4. If still no audio, then it maybe the audio circuit board needs to be checked.
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Go back into the menu where the closed captions are and you likely will find either there or in the audio menu you have SAP selected which will blank sound on certain channels. (button on the remote for Stereo or MTS can also do this.
hi, As you mentioned its sounds like the X buffer (Right and left) of your tv is faulty. There are two boards in your tv for driving the X plane of the plasma panel. Normally you can find these board on the top or bottom portion of the TV. . Its part numbers are Right buffer board is 6870QSC107A 6871QRH073A and Left buffer board i EAX35683901 EBR35855501. Before purchasing the boards identify which board is faulty. That you can find easily. Check which portion of the screen have vertical line in right or left side of the panel. The board for that side is faulty. You can find these boards on the following link.
I had a lot of problems with the same TV but i'll be watching it and it will go full volume with static and turn off by itself then i would have to unplug it from the wall. then it would work fine for a day or a week then do it again. but today it did it and it wont work the yellow light is on but wont turn on.
You can always turn your TV off, unplug it from the electrical outlet, wait for 30 seconds or so, plug it back in, then turn it back on. If you have kids check the menu options to see if they may have tampered with it unintentionally. If all else fails, call Vizio and ask for their professional help. If you are not satisfied with their help and assistance, make a complaint by going to BBB.org (Better Business Bureau). Maybe if you tell Vizio that you're going to call the BBB then they might take you a little more seriously.