Vizio VX32L vertical thick bar on the display

[Beowulf]

Hi,
I got this TV which had been messed with by somebody else.
As you'll find in the pictures somebody messed up the board while trying to remove the u33 1117 regulator and ripped the pad along with one cap next to it.
I managed to install a new regulator and cap.

You'll see in the pictures before and after of the display. Before doing the repair the set would come up black with the vertical bar. After the repair the set comes up blue with normal video but with the vertical bar still.

When I was checking I noticed that the LVDS cable that connects the tcon board and the main board was a little messed up. It had a black wire desoldered and I soldered it back.

Could this be a panel problem or is should I focus on the tcon board and/or cable?

[Mr Bill]

Re: Vizio VX32L vertical thick bar on the display

It looks to be a bad panel but for giggles you could clean the 2 cables that go from the panel to the tcon board but i wouldn't hold my breath.

[tom66]

Re: Vizio VX32L vertical thick bar on the display

I've seen this before, and it's usually a bad panel.
https://www.youtube.com/watch?v=kAIbSEuW94s

[Beowulf]

Re: Vizio VX32L vertical thick bar on the display

Thanks.
Yeah looks like it. I'll take a look.

[bjorkson]

Vizio VX32L vertical thick bar on the display

I have a 32in Vizio LCD VX32L with constant black lines on the screen. Do you guys think this is a bad inverter or t-con board? Or bad LCD panel?
I have attached a pic...any help is appreciated. Thanks.

[tom66]

Re: Vizio VX32L vertical thick bar on the display

Most likely a bad LCD screen, but if you're lucky, could be tab bondings.

[bjorkson]

Re: Vizio VX32L vertical thick bar on the display

Is there any way to test it out to verfiy the tabs are bad? or a fix for it?

[tom66]

Re: Vizio VX32L vertical thick bar on the display

Have a look at this video.
https://www.youtube.com/watch?v=purk_SyiT44

It's a different symptom, but the fix is the same.

[bjorkson]

Re: Vizio VX32L vertical thick bar on the display

OK, thanks for the tip. I will check it out.

[johnboy1313]

Re: Vizio VX32L vertical thick bar on the display

Tom, I am not questioning your expertise here, I just want to add a thought. The almost perfect spacing between the bars makes me think T-con. Is it possible for TAB bonds to fail in such a perfect fasion?

[tom66]

Re: Vizio VX32L vertical thick bar on the display

It does look odd, but each bar is also a varying width. So I would consider the panel first, before the t-con. It's quite possible, for example, that one edge of each tab runs particularly hotter than the other -- leading to early failure there.