Question about Toshiba REGZA 42RV530U 42 in. LCD HDTV

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The power shut off after lightning striked and my toshiba 42rv530u tv's display is grainy with grey vertical lines in all display modes when the power came back on. also, what i thought was a surge protector, was really just a multi-outlet cord. what can i do to fix this? the warranty has expired and i can probly replace the part myself if someone can tell me what exactly has fried.

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Hello,

All plasma an lcd tvs 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 reseating the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They can sometimes be fixed, but it is a pain. An yes I have done it, and 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 Aug 03, 2010

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