Sound from VIZIO E420d-A0 42-inch fluctuates from low volume to high volume w/o any changes being made

[publicenemy219]

As the title says. I have my Vizio connected to my computer via HDMI, and this problem has been occurring over the years despite the services calls I made to have the motherboard inside the tv replaced (Didn't fix the problem).


What happens is whenever I use the TV as the default audio signal on my PC, the volume will literally fluctuate as if someone is controlling the volume settings and bringing it from 0-100% and 100%-0%. When it reaches max volume you can hear the static in the speakers and its very unappealing. After trying to fix it from a year ago, I am back to where I started and would like a solution if anyone has any insight on this matter.

Currently I am using independent speakers which doesn't present the same issue as with the HDMI enabled audio from the Vizio TV.

 

[americanaudiophile]

Try turning off the CEC function on the TV. Its not supposed to work like this but when the two components connected with HDMI have different command setups weird stuff can happen.