Vizio will not turn on

[fmlu]

I have a Vizio M502i B1 and yesterday I found it turned off and it would not turn on. Originally as I tried the white light on the side of the tv would come on Some times the screen showed the vizio sign in the middle of the screen but this then disappeared and tv did not come on. I then tried power cycling the tv a couple of times, after power cycling not even the white light on the side came on. In fact after the power cycling nothing at all happens when I try to turn the tv on.
Unplugged tv and left it unplugged overnight; this morning I put the plug back in and the TV powered on without any problem. It has now been running for over five hours without any problems. Any ideas as to what might be the problem. Thanks in advance

[dskall]

Re: Vizio will not turn on

Need good clear straight on pictures of back of tv with cover off and each board.

[fmlu]

Re: Vizio will not turn on

Roundbox has already posted pictures for this model M502i-b1. Looking for information as to what might be the cause of this problem.

[budm]

Re: Vizio will not turn on

Since it is working right now, then you should record the DC Voltage reading of the power supply connector pins that go to the main board, then take the reading when the TV stops working.