Vizio E320VA allegedly gets very loud and shuts down

[Pioneerx01]

I go my hands on free Vizio E320VA. Previous owner stated that while watching TV, sound would get louder and then the TV would shut off by itself. I have no idea what they were watching on what input or for how long until this occurs.

I have been "watching" the TV for several hours now and nothing happened. I have also removed batteries from the remote and covered up the IR port on TV just in case.

If this was a real problem, what would be the most likely source of this problem? I am guessing power supply? Anyone has similar problem like this before?

Thanks!

[Agent24]

Re: Vizio E320VA allegedly gets very loud and shuts down

Hard to say. A stuck 'volume up' button makes sense, but then to shutdown afterwards? I don't know. Unless the code was then confused for power off command somehow.

The PSU could be underrated or the capacitors are half-dead and the audio amp at full power is overloading it.

I would not rule out faulty front panel buttons. I have replaced more front panel buttons than I ever expected to. The ones that use a resistor-ladder to create an analog voltage are most susceptible to faulty (dirty\high resistance) buttons. Multiplexed buttons are much more reliable.