Re: no sound after I change the channel. If I turn the
There is an incompatibility between Fios and Vizio audio. To fix the problem, on the Fios box, press "Power" then "Select" then "Menu", one right after the other. This accesses a secret menu on the Fios box. Using the arrow keys on the front of your Fios box, arrow down to "Additional HDMI Settings" then press the right arrow. Another menu will appear (may take a few seconds). Arrow down to "Audio Out" and press the right arrow to change from "Auto" to "L-PCM". Press the Power button to exit the menu. This should solve your problem. Thanks to Vizio tech support for the answer.
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There are 3 possibilities, is the mute icon showing when the sound goes out as you change channels? if so then something isn't right with the remote or the remote sensor circuitry..if that looks ok chances are its a bad main board however if the supply voltage to the sound circuitry is falling off then the power board could be at fault, best chance though is a bad main. If you would have listed the model I could pull up a schematic and see if the voltages that feed the sound are local to the main or if they come from the PS.
Have you checked the TV without other devices connected to the TV.
Eg. disconnect any home theatre or speakers from the TV.
Verify with audio menu if the settngs of TV speakers is on or off ?
To adjust the audio settings:
1. Press the menu button on the remote. The on-screen menu
2. Use the arrow buttons on the remote to highlight audio and press ok. The AUDIO menu is displayed.
3. Use the arrow buttons to highlight the setting you wish to adjust, then press left/right arrow buttons to change the setting:
• TV speakers - Turns the built-in speakers on or off.
Lastly have you tried restoring the TV to factory default settings.
To restore the TV to its factory default settings:
1. Press the menu button on the remote. The on-screen menu is
2. Use the arrow buttons on the remote to highlight system
and press ok. The SYSTEM menu is displayed.
3. Highlight reset & admin and press ok. The RESET & ADMIN
menu is displayed.
4. Highlight reset TV to factory defaults and press ok.
5. If you have changed the default parental control passcode,
enter it now.
The TV displays, "Select Reset to restore all TV settings to
factory defaults and clear all account information."
6. Highlight reset and press ok.
7. Wait for the TV to turn off. The TV will turn back on shortly
afterward and the Setup App will begin
I have the same set, same problem with one of my MOTOROLA boxes, but not with another. I have a SONY TV that works fine with this new MOTO box, but the new VIZIO does not. The audio is coming through the HDMI cable just fine, and the fact that it works when you cycle power on your TV means it's the SYNC between the TV and the BOX. I have the identical problem and am taking back the MOTO box for another one. I spoke to VIZIO for about 45 minutes trying different things. They think it's the MOTOROLA box, COX (my cable company) thinks it's this particular box, who knows.
The TV usually hums when the backlight setting is too low. So turning
it up should get rid of the problem. To do this please follow these
1. Turn the TV on.
2. Press the Menu button on the remote, located right below the channel changing button.
3. Press the down direction button, located at the middle of the remote. Press that button until the backlight is highlighted.
4. Press the right direction button until the backlight is at 100.
5. Press the OK button and then the Exit button until you get back to your picture.