VIZIO TV (Model:VL370M) Display not working

[nomoresonys]

Originally Posted by nomoresonys

maybe check all the test points and see if there's any differences if you havent already.

Oops my bad, dont know what I was thinking, I must have just wrote down what I read in your post.

[L3git]

Yeah I’ve noticed that too looks like VGH is half of what it should be for a working TCON board. It’s interesting to see what you guys do to troubleshoot. I’m curious how come VGH is a problem why is the voltage lower than it should be?

[dskall]

I think vgh is created by a voltage doubler circuit. Maybe a shorted diode. I can't read the chip that generates the t-con voltages.

[L3git]

Hm I see so it’s one of those little metal pieces like C25, C76, C61 or that area around it that’s shorted?

[dskall]

C are capacitors. D are the diodes

[nomoresonys]

can check the caps meter in diode mode, probe on each end, shorted if continues to beep or reading close to 000, if one reads short remove and check off board, if it's ok off board then something else was making t read short.