Question about JVC LT-37X688 37 in. LCD HDTV

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When turning on the TV, it has redish, purple & green lines across the screen & you have to leave it on like that for at least 5 to 10 minutes for it to warm up. You just have to keep turning it on & off until it finally goes to the Blue Black words "JVC" & then it goes to the channel & works fine. It is taking longer & longer for it to finally come on.

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Hello,

Al Plasma and Lcd TV 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 May 25, 2011

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