VIZIO L37HDTV10A: Lightning damage

[tom66]

Re: VIZIO L37HDTV10A: Lightning damage

Perhaps it's easier on the t-con side?

[MyHD120]

Re: VIZIO L37HDTV10A: Lightning damage

It pushes straight back. I used a small pointed screwdriver on both ends. There are no hold down clamps.

[martyparish]

Re: VIZIO L37HDTV10A: Lightning damage

Aha! Thanks MyHD120 and Tom! I got it off just like you instructed. Now I can try to figure out the short on this board... I am determined to revive this beast that I payed $1,300 for back in the day!!!

[martyparish]

Re: VIZIO L37HDTV10A: Lightning damage

Hey guys, I got the main board out and have been checking over it looking for any clue to the blown fuse and apparent short to ground.

There is one good sized diode on it and it was reading both ways so I removed one leg. Now it only reads the one direction BUT it seems too low:

0.174

That's too low right?

[martyparish]

Re: VIZIO L37HDTV10A: Lightning damage

The datasheet states:

Forward Voltage 0.67 V (so I should be seeing 0.67 in diode mode correct?)

Here is the datasheet I believe(mine is a SB560):

[martyparish]

Re: VIZIO L37HDTV10A: Lightning damage

One more thing In this image, the diode in question is the one just down and right of the red arrow(which marks my blown fuse)

https://www.badcaps.net/forum/attach...6&d=1358089910

Thanks!!!

[martyparish]

Re: VIZIO L37HDTV10A: Lightning damage

Hey guys, still messing with this thing, trying to find the short.

Question: I have a bunch of very tiny SMD components labeled with CB designators. They look like tiny caps, but can anyone confirm? Tx!

[tom66]

Re: VIZIO L37HDTV10A: Lightning damage

Can we see a picture?

[martyparish]

Re: VIZIO L37HDTV10A: Lightning damage

Absolutely, sorry for not posting one and thanks for having a look. In this pic, you'll see the fuse that is blown and on the "dead" side it's shorted to ground.

I'm just trying to back trace and test parts but wasn't sure what "CB" designates???

[budm]

Re: VIZIO L37HDTV10A: Lightning damage

That is capacitor, what type I cannot tell, it looks like they use CExxx for the ceramic type.

[martyparish]

Re: VIZIO L37HDTV10A: Lightning damage

Thanks Budm, I thought so as well. It's not like I could replace that tiny thing anyway, just trying to see if I can trace this short.

I got the PSU running so I may end up biting the bullet and just source a main board... I'm just a persistent mofo, not to mention this is the TV I bought for $1,300...

[martyparish]

Re: VIZIO L37HDTV10A: Lightning damage

BTW, I get 0.8 ohm resistance and no reading on capacitance on that cap. Tested other smd caps nearby and am getting readings so the meter is working it would seem.

[weirdvideos]

Re: VIZIO L37HDTV10A: Lightning damage

Im new to this site: And have a question.
RE: I own and fix tv's, and picked up my first LG 50PC1DRA-UA plasma.
QUESTION: Can someone tell me where to go from here with these problems? here is the list.
1. TV was 1/2 working: Turn it on, then it BLINKS from black screen to snow, with a 2% image of the menuhiding in BG- probably a burnin on the plasma screen.
Replaced the Power Supply only to find out mine was good. Problem still blinking.
2. Replaced the z-sus board. Screen stopped blinking and stayed black = not an advancement someone said.
3. Bought and replaced the y-sus, and two buffer boards.
= TV FIXED and got image video back!
BUT, color is a bit weak, a little blurry, not very much better than a 2-3rd generation VHS resolution;
AND, the RED bleeds through the WHITES, even if I play a B&W old movie DVD.
Adjusting contrast and bright and all others, does not good, no matter what setting.
4. Images seem to surface crawl, with speckles and choppiness = EX: SKIN of faces will move around and act checkered...
LAST OF ALL: I live 150 feet away from MAIN electrical outlet and get only 109 AC volts to my motor home. With a few lights on, it drops to 98-100 volts. WOULD this effect this plasma TV?
SO??? Anyone want to challenge this?
It's a WHITE ELEPHANT if I don't get it fixed, and an EXPENSIVE one too.
Please reply soon.
ROSS

[tom66]

Re: VIZIO L37HDTV10A: Lightning damage

Please create a new thread. I'm surprised you picked up one of those LG's. They are white elephants IMO. Difficult bastards to repair.

[martyparish]

Re: VIZIO L37HDTV10A: Lightning damage

Yes, create a new thread but thanks for resurrecting this one. I guess it's an omen telling me to work on it again

[notallbad]

Re: VIZIO L37HDTV10A: Lightning damage

Hi
You say that you fixed the PS, but not how?

[martyparish]

Re: VIZIO L37HDTV10A: Lightning damage

@notallbad Replaced all of the caps