Samsung LCD vertical lines.

[diif]

Hello, I'm suspecting a tab bond issue. The lines are solid and don't move. I have measured the width and its an 8th of the screen.
Am I right ?
I did wiggle the two cables that go to the tcon and I thought I could see a picture through the lines but perhaps it was a coincidence. It doesn't seem to make any difference today.
I've tried twisting the frame but there doesn't seem to be any flex.
Thanks

[ReeceyBurger123]

Re: Samsung LCD vertical lines.

Probably failed Tab-Bond driver more than likely unfixable. Try taking the screen apart and pressing on the Tabs to see if it makes a difference also check the temp of the Driver on that Tab if its very very hot means its failed basically.

[diif]

Re: Samsung LCD vertical lines.

Cheers ReeceyBurger, i shall strip the tv down and have a look.
I have measured the temp with my hand and an infared thermometer and the part of the frame above the vertical lines is slightly cooler than the rest of the top of the tv.

[ReeceyBurger123]

Re: Samsung LCD vertical lines.

No problem good luck with it

[freakaftr8]

Re: Samsung LCD vertical lines.

Sometimes you may get lucky and it's a bad solder connection on one of the smd capacitors on the lcd driver board attached to the panel. I've fixed this issue twice. Once on an AUO 42 inch panel and once on a 52 inch samsung panel. Had the same look as yours.

[diif]

Re: Samsung LCD vertical lines.

I seems it was a tab issue, pressing down made the patttern disappear. I tried using some thermal heatsink material but I just couldn't get it right. I managed to pull off part of a tab at the other end in the moving process.
I shall just part the TV out as I know the boards are fine. Nothing lost as this TV was given to me.
Thanks for your input guys, I've learnt something new and stripping it down was easier than I thought.

[budm]

Re: Samsung LCD vertical lines.

It takes patient, times, and practices to do the tab bonds, it does look like this one:
https://www.badcaps.net/forum/showth...ht=tab+bonding

[diif]

Re: Samsung LCD vertical lines.

I'd never done one before and it was all going well until I tipped the screen forward to put it in the frame. I was holding the plastic not the screen thinking the screen was secured to the plastic and when I tilted it forward it swung loose and that's when it pulled part of the tab off I think on the other end of the screen.
I've put it to one side for now, its been a good learning experience.