I have sound when I switch to AV to watch streaming Netflix, but when I switch back to HDMI1 to watch regular cable TV I lose the sound but do get a picture.
The main board is having an issue the AV inputs will eventually fail as well the HDMI are first to fail. Replacing the main board should solve the issue. You can get the replacement main board from www.tvcircuitboards.com
SOURCE: Picture but no sound on my Vizio L37 Flat Screen
I had the same thing just happen and I used the following instructions from the Vizio Website for "humming sound" on tv and it worked. My sound is now working!!!!
1- Power off TV
2- Unplug TV from outlet
3- Press and hold in the power button on the TV for 30 seconds (while it is unplugged from the wall)
4- Release the power button
5- Plug in the TV into a different outlet
6- Power the TV back on.
Reset the TV settings.
SOURCE: Picture but no sound on my Vizio L37 Flat Screen
i have a 50 in vizio and the sound just went out. the picture still works but no sound anyone have any ideas on how much to repair it?
SOURCE: Picture went out on p50hdm Vizio Plazma tv after loud POP
It's either the backlight lamp or backlight inverter is busted
due to a power failure or fluctuation. Here's how to determine which is which:
SOURCE: vizio 47" lcd no picture no sound has power
this could be one of two problem. first, check if you have back light. If you do then the problem is with the M/B. Second, if you don't have back light then the inverter is bad and needs to be replace.
SOURCE: Buzzing noise coming from Vizio HD TV speakers
It ur Vizio tv,The power supply board is the problems.The transformers in the power supply board have gaps in the transformers.The high voltage curents flow that make that buzzing noise.
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