Riddled TV Repair Forum

cyphertek · Joined: 26 May 2009 Posts: 9 Location: USA

Specifications
TV make: Vizio 37" FP
Model: VX37L HDTV10A
Chassis: 1712-0101-1130 / 1712-0101-1140 (I think these are the chassis numbers)

Background
Friday: I replaced the MainBoard with a refurbished one and it looked great!

Problem
Saturday: It turned on Ok 1 time in the morning. Later in the day I turned it on and the picture was extremely blotchy / fuzzy.

After about 15-20 minutes the picture restored and looked great, like Friday.
Today: Every time the unit is turned on, it looks like the above pic.
I noticed it has green, blue, & pink vertical lines if the cable box is turned off.

What have I tried already?
I tried "Restore All Settings" and tried pulling the power cable out for a few minutes - no change.

Is this a bad MainBoard? The problem is present on every input, so it doesn't seem like an external signal issue. I would like to exchange the MainBoard since it is refurbished (maybe the next one won't do this). The TV is not under warranty so I wanted to get some more opinions. Thank you in advance for your insight.

Google

JTS1957 · Joined: 21 Jan 2009 Posts: 1331 Location: Far, Far Away

Let's go back. Way back. BEFORE Friday. Very Happy

What was the reason(s) (symptom) that a refurbished replacement MainBoard was obtained and replaced?

There's only one thing worse than a "pulled from service" board ... a "refurbished" board. Rolling Eyes

cyphertek · Joined: 26 May 2009 Posts: 9 Location: USA

Thanks JTS1957. Here ya go > http://www.riddledtv.com/forums/vizio-vx37l-backlight-only-no-response-from-side-buttons-t1389.html

JTS1957 · Joined: 21 Jan 2009 Posts: 1331 Location: Far, Far Away

I get confused quite easily as I get ancient...

Myself, I would have kept the same thread going.
Always give the set at least two shakedown runs before proclaiming victory.

My opinion (then and now) is still the main board.

cyphertek · Joined: 26 May 2009 Posts: 9 Location: USA

I agree with you JTS1957, it could have been appended to the other thread. But I started a new one since this seemed like a different issue, IMHO. The other thread's title is different than this issue - the term "topic centric" comes to mind... Mr. Green

Thanks for the replies JTS1957. I will post what turns out with the replaced MainBoard.

Google

Jesse Mack · Joined: 22 May 2008 Posts: 600 Location: The Last Frontier

Poorly seated or oxidized ends of the LVDS cable can cause this symptom.

Jesse

cyphertek · Joined: 26 May 2009 Posts: 9 Location: USA

I replaced the MainBoard and am no longer having this issue. Thank you all for the input.