Black line we have a 37" toshiba flat screen,there is a black line 2" from the top of the screen,from one side to the other,could it be a faulty control panel?

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

That sounds like you have a faulty screen

sounds like the same problem as with most screens. it could well be the screen as gone

panel its dying :( sorry better get new one :((( you still can try with the old one some time the cables that control the the rows get unglued you can try heating them and reg glue them
Good luck

If the line travels from the top of the screen to the bottom, try disconnecting the Tcon LVDS lead. The Tcon is located in the top middle of the LCD rear. Disconnect the LVDS from the Tcon by pushing in the outer lobes. Clean the contacts on the LVDs lead and reinsert. If this doesnt cure the fault, disconnect the ribbons from the Tcon connecting the LCD and clean and reinsert. If this doesnt cure the fault you have a faulty LCD.
If the vertical line doesnt travel from top to bottom of the LCD, the LCD is faulty (LCD matrix buffer).Hope this helps :)

your lcd panel is failing and will need to be replaced

Unfortunately you are right it is the display panel going bad. You can either live with it or buy you a new tv as the panels usually cost as much or more than the tv. Sorry.
ladytech

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.

Sounds like panel is bad or driver ic is bad on the board directly below the black line. Good luck on the repair. Any questions, we can do a chat and go from there. GURU JAY

alot, not worth fixing.