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My rear projection tv does not have a pitcure. It started out as a small black line at the bottom of screen. The screen is now all black. I do have audio but no video

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  • denton1000 Nov 12, 2010

    It is a Toshiba. The model is TP50F61.

  • denton1000 Nov 12, 2010

    Do you have any ideal what is causing this problem.

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  • Master
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Hello,

All plasma an Lcd ts have boards that control vertical and horizontal output to their respective areas. They are connected to the screen by ribbon cables. If one of these boards fails all together, has a failed chip, a bad connection, or a bad ground somewhere it will result in a black line in the area of that board. A bad ribbon cable connection on the bottom will result in a vertical black bar though the screen. Many times resetting the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They an sometimes be fixed, but it is a pain. An yes I have done it, but the bar is gone. The same will happen if the chip that outputs to that area opens. The connectors are the first place to look paying close attention to the cable, they are extremely delicate so great care must be taken if you decide to tinker with em, the usually have lift locks that release them, but it is very easy to wreck em. Good luck.

Posted on Nov 12, 2010

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What is the make/model of the unit please?
Thanks!

Posted on Nov 12, 2010

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