Samsung le40b530p7w vertical lines all over screen

[tn245]

This one came to me today and I haven't popped it open yet - will leave it till tomorrow. Guy said sound but no picture but I turned it on and it does this. The lines change when pressing buttons for menu etc.

What might I be looking at here? T-con? Tab-bonds? What's the betting?

[tom66]

Re: Samsung le40b530p7w vertical lines all over screen

I have seen this before and it was a bad panel. Not saying this one is but consider the possibility.

[tn245]

Re: Samsung le40b530p7w vertical lines all over screen

Oh well, not too worried if it is - this one's effectively a freebie. Will investigate more in the morning.

[tom66]

Re: Samsung le40b530p7w vertical lines all over screen

This was mine
http://www.youtube.com/watch?v=kAIbSEuW94s

[tn245]

Re: Samsung le40b530p7w vertical lines all over screen

So I've got it apart. The tabs all look fine, no holes or burns - though they are getting a bit hot. Pressing on them makes no difference and freeze spray did nothing too. I've checked over the t-con and reseated cables but still the same. Display symptoms are a lot like yours Tom minus the burned out tab. Is it worth trying another t-con or will I be throwing money away? Anything else I can check?

By the way, a not very funny story. When I said it was a freebie, a guy came to buy another TV from me and this Samsung was the reason he needed a new one. He bought the other one but left this one with me to repair and will take it back and pay for the work if it's repairable. He just called me this morning to say he was mounting the one I sold him on the wall, put it down on the table and broke the screen! So now he's pretty desperate that I fix the old one. Poor guy.

[tn245]

Re: Samsung le40b530p7w vertical lines all over screen

Found a t-con for £10 so taking a chance that it's that. Fingers crossed.

[tom66]

Re: Samsung le40b530p7w vertical lines all over screen

Oh man, that is bad luck! I hope you can get this one working now.

[tn245]

Re: Samsung le40b530p7w vertical lines all over screen

Turns out it's a bad panel as you suspected tom66. The new t-con changed nothing. After watching this vid: http://www.youtube.com/watch?v=GcBwTums_mI I tried disconnecting either t-con ribbon to panel and one half is working ok. I guess this one is going for parts then.

[tom66]

Re: Samsung le40b530p7w vertical lines all over screen

Score one more dead Samsung panel. Just had a 37" LG LED with a dead panel myself, AUO. And a 37" Toshiba LCD with an unrepairable tab bond fault. I see tons failed on eBay, etc. Too many panels dying, man...

[tn245]

Re: Samsung le40b530p7w vertical lines all over screen

This week was my first bad panel and first cracked screen. Had to happen sooner or later I guess. Even norcal in the vid I linked says that's why he prefers plasma, because too many LCDs going bad or getting cracked.

Another newbie question: what parts are worth saving/selling from a dead screen tv and what usually goes to the dump with the chassis? I took out all the boards, most of the cables. Kept a fair share of the screws too for spares. Anything else I should have before getting rid of it?

[tom66]

Re: Samsung le40b530p7w vertical lines all over screen

Keep the bulbs too.