Question about Vizio SV420M LCD TV
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Posted on Jan 02, 2017
Connect all A / V sources to the Home Theater Receiver then Video-Out from the receiver and totally mute) the TV.
Posted on Sep 30, 2008
There maybe another signal coming from somewhere causing the problem. Try blocking the IR sensor in front of the TV. If that stops it, your next step is finding the source.
If blocking the sensor doesn't work, check out the buttons on the TV itself. It may have a sticky or damaged button.
The volume down button may have went bad.
Posted on Feb 18, 2009
SOURCE: only vizio light on
RJW34 I have a 37" Viizio LCD that has a similar problem. I power it up and I get a lit screen but it's blank. No controls work except power on and off.
Posted on Feb 20, 2009
The circuit or integrated circuit being controlled has likely failed. You might try 'resetting' it by pulling the AC plug overnight. If that has no effect, a repair is unavoidable. This model seems to be developing a number of different problems.
Posted on Jun 15, 2009
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