Hi, just wondering if you have suggestion on our plasma TV. There are vertical lines on both side of the screen and only the center portion is viewable. It started with 1 line then after 2 days more lines coming out. TV is Sony XBR-MBT-XBR900 (Media unit) and the TV screen serial number is PDM-4200-2102045 Model 2003. Could you help me figure out the problem before bringing it to the shop. Is it the thermo fuse? Thanks a lot
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hi, As you mentioned its sounds like the X buffer (Right and left) of your tv is faulty. There are two boards in your tv for driving the X plane of the plasma panel. Normally you can find these board on the top or bottom portion of the TV. . Its part numbers are Right buffer board is 6870QSC107A 6871QRH073A and Left buffer board i EAX35683901 EBR35855501. Before purchasing the boards identify which board is faulty. That you can find easily. Check which portion of the screen have vertical line in right or left side of the panel. The board for that side is faulty. You can find these boards on the following link.
NOT DEFECTIVE!!! There are 4 or 5 ribbon cables on the bottom or on one side, they control part of the plasma screen. Check the ribbon cablenear the black lines. Unplug the ribbon cable and look for black chipson the underside of it, I think they say 100 on them, you need toresolder both ends on each chip. Should fix the black line issue.
Hello Depending how wide the line is their could be two possible causes.
I have two questions for you.
1. How wide is the line.
2. Does it run from top of screen to bottom of screen?
If the line is thin a single strait line then it is possible the PDP has gone Bad (Panel). (Screen). The screen will to be replaced.
If the line is at least 2 or more inches wide then its a buffer board which can be replaced. LG calls this board Hand insert Boards or display driver boards..
It sounds like an Intergrated Circuit (IC) has fried. Even on a good day, this is not something you can attack at home. As a tech (and as an owner of that model samsung), I'd need a map & tools to know what's going on. Your best bet in this situation is to contact Samsung and let them recommend an authorized service center in your area. Sorry I can't be of more help, but this is a rather serious problem.
On al the plasma tvs there are control boards on the lower part of the screen that control the vertical images. If one of the chips on one of the boards fail, have a bad connection, or no ground it will result in a thick black lne down the screen. Seeing as the tv is new I would get the warrantee repair on it. There is a possibility that there is a problem with the screen itself but more than likely its the boards.
I also have the same problem I phoned Samsung today to explain the tv was only 14 months old, they didn't wanna no because it was out of warrenty by 2 months. I am getting a black solid line down the left hand side of the screen. I ended up phoning Dixons were we bought it from, they have told me to get an independent engineers report done & send the report to them within 14 days. Dixon told me it was a known problem with Samsungs. They said they will fix it free of charge if they can if not they will send vouchers to the same value of the television. So beware stay clear of Samsungs.