Vizio vp422 wont power up

[chrisman183]

Hey guys, I'm extremely new (first day). so, I had a power surge a couple weeks ago, it took out my wireless router and also my 42" vizio.
It's a VP422 HDTV10A.
It has no amber/white light at all. Completely dead, I can see a small green LED through the back panel however. If I unplug it, and plug it back in, the screen flashes white like it's trying to come on, and the amber light comes on for a half a second, then it is again completely dead. the power button doesn't work, only unplugging and then re-plugging(?). I was hoping this is just the power supply? The only thing that got fried on my router was the power supply transformer.
Anyway I did read about a "2 seconds to black" issue that sounded similar, but after reading about it a little, it sounds a bit different....
Any thoughts/suggestions?
Thanks for any help guys...

[chrisman183]

Re: Vizio vp422 wont power up

anything?
I've gotten it apart and going through the T/S guides, but nothing is based on the specific tv i have...

[TVRepairNoobie]

Re: Vizio vp422 wont power up

How about from this list?
http://www.toms-service-manuals.com/...&Search=Submit

[TVRepairNoobie]

Re: Vizio vp422 wont power up

Upload clear pictures of the boards from your TV.

[TVRepairNoobie]

Re: Vizio vp422 wont power up

Check the fuses to see if its dead.

[chrisman183]

Re: Vizio vp422 wont power up

yes I had been looking at that guide, thank you. I'll get some pictures and let you know what the results are from checking it soon.

[chrisman183]

Re: Vizio vp422 wont power up

All the fuses I could readily identify are good.

[chrisman183]

Re: Vizio vp422 wont power up

Have to do these 1 at a time apparently...

[chrisman183]

Re: Vizio vp422 wont power up

3rd one

[chrisman183]

Re: Vizio vp422 wont power up

Check the fuses to see if its dead.

Ok so I finally checked all the voltages at the test points on the power supply board. They are all good! I was surprised. So. What could I look at next? This is the voltages I got and what they're supposed to be.
Thanks for your help. I was hoping it was the P/S board... :-(

[chrisman183]

Re: Vizio vp422 wont power up

Anything? Don't know what to look at anymore basically. Could the control module board be bad? Is there anything to check there?

[chrisman183]

Re: Vizio vp422 wont power up

For sale: TV described above. Make offer. 😆 thanks anyway guys

[Toasty]

Re: Vizio vp422 wont power up

Thread necro here:

Found same problem today on same model.

Problem was OPEN cap C8002, 22uF / 450v, 16 x 30mm just below central heatsink. In the picture in post 7, it is left of the smallest of the 4 transformers in a row, T8001, and right of fuse F8002.

Also, several of the small caps (5mm) are all over the place in ESR, so they'll be going too.

Yes, set is a bit long in the tooth, but the client doesn't have a lot of money to spend.

Cheers!
T