I have a small 2-5 inch red line comin down from the top left corner of my screen it just appeared 2 days ago, the line gets bigger and smaller but never goes away can you figure out where this came from and what I can do.
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MOST LIKELY YOU HAVE A DEFECTIVE LCD PANEL. Try lightly squeezing the top of the TV. Start from one corner and work your way slowly to the other side. If squeezing the top of the frame clears up the screen problem, you have a defective LCD panel tab. The only true repair is the replace the screen. This cost for a replacement panel could cost more than a new TV set.
Modern televisions have screens divided into sections. Each section controls all the rows in its area, and it is controlled by its own video separate video driver. If you are missing a line in a section, then a problem has occurred with the driver board in that area. It will be pretty expensive to fix, I hope your warranty has not just expired!
Try moving a medium powered magnet (not one for picking up heavy objects and not a refrigerator holding one) over the distorted area. If that doesn't work, try a more powerful one. This worked for my Toshiba LCD. Good luck!
I wish I could post a solution, but I don't have one. I too have a Magnavox. About 6 months ago, once every 2 weeks or so, the screen would just go black- all but an inch or two on either side. Now, it seems like it's a weekly thing, sometimes every hour or two. As of tonight, it has happened twice in a matter of thirty minutes. It usually repairs itself if I turn it on and then off again but that's just not working anymore. If anyone has a solution, let me know.