Samsung LN46C630 Thin Vertical Lines on entire screen

[SergeyR]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

My internet connection here is super slow, so the video will be uploaded in 3 hours, thus I'll post a link only tomorrow.

But unfortunately I didn't understand what do you mean by "tab bonding". Please could you explain it using different words. I also wonder how could I fix it? I have only these tools: multimeter and soldering-iron.

[budm]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

https://www.badcaps.net/forum/showpo...&postcount=113

Just do the search in badcaps 'TAB BONDING'

[nomoresonys]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

That looks like tab bonding issue.
What happen if you try flexing the panel?

did you try flexing the panel???

[SergeyR]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

Oh, I see now. Thank you!

Ok, I'll try to disassemble my panel and check tabs.

And finally here is my video which shows the problem. I didn't record this video from the very beginning, but when I turned ON my TV everything was fine, then the screen begin to flicker a bit and then you can see colored vertical lines. Please watch it to the very end and you will see that after a picture test turns off automatically you can still see that picture on the background and vertical colored lines on the foreground:

http://youtu.be/Sz6KJ3nX1QE

And I need to confess that when I watched movies I paused a movie, but didn't turn off TV, thus that paused movie frames were on the screen for the whole night. It happened about 5-6 times. Maybe that was the reason for the overheat.

[SergeyR]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

No, I haven't tried to flex the panel. I'll try.

[SergeyR]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

So I just turned on TV. It was OFF since last evening. And I suddenly saw the same problem. So this time it even didn't need to warm up. I decided to flex the panel. So I grabbed a top side of the panel and pulled it towards me. And then boom! The problem disappeared before I even started flexing it.

I don't know how to explain this issue. I left TV on and will wait. Maybe this problem will come back later....

[SergeyR]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

Yup, the problem came back. I tried to flex TV, but it didn't help this time.

[nomoresonys]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

try holding the frame/bezel with your palm, and tap on the back see if anything on display changes if not tap it a little harder, try it in different spots too, trying to see if its the panel.

[sordids999]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem

[nomoresonys]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

I wouldnt recommend holding a static picture on any tv display overnight.

[Eastgateraja]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

LN46C630:

I have a spares for the above TV. If any one interested please contact me here..

[Jkorf41515]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

I am definitely interested in one of your boards as I got this fine tv off CL for a cool $50, and all it needs is a board to fix my vertical lines.

[n1iwv]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

I have a Samsung LN46C630 with the same exact symptom of thin vertical lines (about 4 mm spacing) across the entire screen.
I have played around with it and found that if I flexed the LVDS cable at the connector on the main board, I could get the lines to disappear. The flexing exercise involves pulling the cable near the connector away from the main board.
I took a wooden stick about 1/8" in diameter and 2 inches long (about as wide as the cable) and wedged it between the cable and the main board. This provides upward pressure on the cable,
This has solved the problem temporarily.
I've order a new cable (BN96-12723D) and will report back when I've installed it

[n1iwv]

Re: Samsung LN46C630 Thin Vertical Lines on entire screen

Well I tried replacing the LVDS cable and that did not solve the problem.
I found that pressing on the IC chip (see RED IC on the Main board photo), I could get the vertical lines to disappear.
It would appear that the BGA is in need of a rework. Maybe re balling.
I am not set up to do this type of work.
Anyone out there know a good reputable service and an approximate cost to re-ball the red IC in the photo?

Thank