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JVC AV-32f704 TV has sound but no picture. Picture is a blanck screen as if TV was not turned on. In the last few weeks the TV has been turning itself off. Now there is no picture at all. What could be the problem?
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Sad to say, but that's one of the ways a picture tube can behave when it's gone bad. After it warms up, one of the wire elements in the neck of tube sags and touches something it shouldn't. As a result you're seeing the green screen, and then the set shuts down for safety because of voltage feeding back. The only way to repair the set would be with a new tube, and that's completely uneconomical. You can buy a new 32-inch LCD set now for less than the price of a new tube, not including the labor to install the replacement and get the color alignment (convergence) set up.
It might be a loose solder connection inside,try to prove it,the next time it goes blank,firmly give a whack to the back or bottom of the set,if it flashes back......sholud be a loose solder conn that a competent technician can find and repair
Is there any picture at all? No matter what the video input. Is this a CRT or LCD? If it is a CRT chances are the CRT is blown. Did you hear a pop the last time it powered up? Does the Menu come up?
the problem with your tv is in the video circuit the ic or transistor needs to be replaced there is a box on the fixya home page just enter your zip code in the box and it will help you locate a repairman in your area.good luck.
You didn't mention if you saw fine white diagonal lines running through the screen from top to bottom. If so, you likely have a shorted Picture Tube which is not usually fixable. If there are no lines seen running through the screen, then it is possible the High voltage transformer which also has a screen voltage and focus control built in that could be bad. I would expect the cost of that part to be about $100, so the repair cost total could approach that of a new set I would guess.
I have the JVC I Art 46" TV. The Close Caption was turn on accidentally by my grandson. After lots of searching for the original remote. I called JVC Customer Support. He told me to change the Close Caption settings to CC2 and T1. That fixed the CC without having the original remote.
The unit most likely has a short in the horizontal section and would require repair by a service center. Go here to find a JVC repair center in your area http://maps.jvc.com/cAscList/
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