vizio e371vl Won't turn on

[geshtu]

I have a vizio e371vl TV that won't turn on. It doesn't have a logo light go amber or backlight at all.

The power board has 5V standby power. The fuses seem OK on the control board and power board and I can see the 5v on the control board. Is there anything else I can try? The caps seem ok, visually.

I am new to this and am trying to learn. I greatly appreciate any help!

http://imgur.com/a/Nud3q

[CapLeaker]

Re: vizio e371vl Won't turn on

Check the PSon and BLon pins on the PSU and try to turn the TV on. THe maybe labeled just as on/off etc.

[geshtu]

Re: vizio e371vl Won't turn on

the 12v line os 0v, the on/off line is alwas 0v when trying to press the power button. Same with the YBR_0 and Status lines

[geshtu]

Re: vizio e371vl Won't turn on

I might have found the issue. There is a DC to DC converter that has 5v input and 5v on the enable, but the output is 0.13 volts. The other side of the inductor also only reads 0.11 volts. I measured between that and ground and am reading a near short. Am I on the right track? I will try to hunt down where the short might be.


http://imgur.com/gallery/P5X3A

[CapLeaker]

Re: vizio e371vl Won't turn on

I figured that you have a main board problem. You are right on track, checking these regulators and buck converters. Vizio has a problem with those. It doesn't have to be a short on the LDO's... it just wont output the right voltage.