auria 32 inch LCD half screen jumpy

[freakaftr8]

Ok I have messed with and repaired alot of LCD/plasma tvs in my day but this one is confusing me. Samsung made panel and tcon with off brand mainboard. What this tv is doing is just a little before half way there is an obvious horizontal line and everything under that line is vertically jumpy, and a times double or triple or depending on what showing on the screen vertically smeared all the way down. as you can see the top good portion of the screen is smeared underneath that line. above the line, completely normal. this seems to get better and worse but never goes away.

i have watchged youtube videos showing some Sony KDL series 32" screens doing something siimilar and the dude hit the tape carriers with freeze spray, coreecting this. on this set, I have already pressed on the connectors, flexed the screen, hit tcon and mainbboard with heat, replaced lvds ribbon from tcon to panel, cecked voltages, tested regulators, etc.. Nothing makes a difference.

Have you guys seen this and corrected it before? Im of the assumption that its a tcon. This panel only uses one ribbon from tcon to panel.

Thanks,

http://i845.photobucket.com/albums/a...r/IMG_4076.jpg
http://i845.photobucket.com/albums/a...r/IMG_4075.jpg
http://i845.photobucket.com/albums/a...r/IMG_4070.jpg
http://i845.photobucket.com/albums/a...r/IMG_4067.jpg

[drpj23]

Re: auria 32 inch LCD half screen jumpy

This looks similar to yours (it is a sony KDL too)
https://www.badcaps.net/forum/showth...sony+bad+panel
I would see if Mr Bill fixed it or not.

If it is not TCON then panel is all that is left.

[freakaftr8]

Re: auria 32 inch LCD half screen jumpy

Hmmm I'm thinking it may not be a tcon after reading his thread.
Btw panel is Samsung LTA320AB02
Tv model auria EQ3299

[tom66]

Re: auria 32 inch LCD half screen jumpy

I've seen that symptom on a 40" Samsung panel and it was the LCD panel. Though it was just tab bonds and fixable.
http://www.youtube.com/watch?v=vCExlSnG4yY

[Mr Bill]

Re: auria 32 inch LCD half screen jumpy

It's a bad panel . I tried the tabs on my KDL-32L4000 and i got the same results you got.

[freakaftr8]

Re: auria 32 inch LCD half screen jumpy

I was thinking that. Oh well it was only 20 bucks and some time spent.

[tom66]

Re: auria 32 inch LCD half screen jumpy

It may be repairable if you want to tear down the LCD to the tabs.

[Mr Bill]

Re: auria 32 inch LCD half screen jumpy

What are your suggestions Tom. My panel on my KDL is on revision older but the same symptom. I'm wondering if it's something in the panel card that's bonded to the screen.

[tom66]

Re: auria 32 inch LCD half screen jumpy

Well, if you're gonna trash it, may as well have a look, see if you can apply the fix as in the video.

[freakaftr8]

Re: auria 32 inch LCD half screen jumpy

I have torn mine down to the tabs already. Pressed on the tabs. Applied pressure and tried a little heat. Also checked tab bonding on the top boards of the lcd too. Have not tried freeze spray yet.
There are no visable issues with the tape carriers as far as I can tell. No burns or cracks.

[freakaftr8]

Re: auria 32 inch LCD half screen jumpy

I'm Going to get some freeze spray with the tabs and panel cards exposed and try it tonight.

[freakaftr8]

Re: auria 32 inch LCD half screen jumpy

Well freeze spray didnt help. But here's the odd question. When I loosen the lvds cable from tcon to panel and start to fiddle with the connections like barely making contact. The interesting thing is well of course the picture gets wierd. But the flicker goes away. Of course the screen redraw us slow. I'm thinking tcon now.

[tom66]

Re: auria 32 inch LCD half screen jumpy

When the T-con starts going crazy, the panel might not get the right signals - it's 90% likely the panel is at fault here. Strip it down and check the tab bonds.

[freakaftr8]

Re: auria 32 inch LCD half screen jumpy

Tabs seem fine. I've done all I can with the panel tab bonds in the way of pressing on them poking an prodding. Lol. Also tried heat and freeze spray. Nothing seems to affect the issue. Stays the same

[tom66]

Re: auria 32 inch LCD half screen jumpy

It's probably permanently failed then.

[Mr Bill]

Re: auria 32 inch LCD half screen jumpy

I replaced the tcon in my KDL-32L4000 and it didn't fix it.

[freakaftr8]

Re: auria 32 inch LCD half screen jumpy

Well since its junk I'm going to expiriment.

[freakaftr8]

Re: auria 32 inch LCD half screen jumpy

I know this thread is old but just got around to replacing g the tcon and same issue but I hit the right side of the screen with freeze spray and issue goes away til it heats back up. The point of the problem is right at the line where it starts. When I hit it with freeze spray the screen immediately fixes itself. When it starts to reoccur there is a horizontal line then the jumpy distorted picture comes back.

[tom66]

Re: auria 32 inch LCD half screen jumpy

So you probably have a bad tab bond then.

[freakaftr8]

Re: auria 32 inch LCD half screen jumpy

That would be thought as well but this is at the point of the side of the screen. Horizontally down the side like almost half way. The tab bonds are at the top.