Vizio P42HDTV10 not turning on and staying on.

[tweednick]

hi guys. need a bit of help with this Vizio. it turns on and relay clicks on then off. the Vs goes to about 60v then it shuts off. my first guess would be it has some kind of shut down circuit. the fuses on x and y sus boards are good. any other things to look at ? thanks , Pat

[freakaftr8]

Re: Vizio P42HDTV10 not turning on and staying on.

Disconnect ysus power connector. . Left board. Ohm between vs and ground. Sounds like a bad ipm. This is the module under the heat sync on the ysus. If shorted across vs and ground its probably bad. Very common on this model n

[johnboy1313]

Re: Vizio P42HDTV10 not turning on and staying on.

I had the exact same model with the exact same problem. It had known good sustain boards and a good power supply. I found that if I pulled the 5V wire from the tuner board, I could get the set to stay on. Long story short, I traced it to the sub-PSU or the main, but didn't want to sink anymore money into it.

https://www.badcaps.net/forum/showthread.php?t=27571

Please keep us posted on what you find. Too many threads end with no answers.

[tweednick]

Re: Vizio P42HDTV10 not turning on and staying on.

yep. Vs to ground - 0 ohms. module on order . will keep you advised.

[tweednick]

Re: Vizio P42HDTV10 not turning on and staying on.

replacing the IC fixed it. nice tv.