I was wathing TV when the picture got black trim on both sides and the picture seemed too big for the screen. The words were cut off by this black line. Then as I continued wathing the picture all of the sudden shrunk to about a 12 inch square and had concave side to it. While I played with the remote the television turned off and would not turn back on. I later unplugged it from the DVR box and back into the wall outlet, at which time the TV turned on with the picture still shrunk and distorted. I would like to know if there is a simple solution, I am a handy electrition with some electronics experience, or will it require serious repair.
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Re: av-32f476 picture shrinkage
I had a Crummy Westinghouse TV that had a problem like this. JVC's are typically better built then a Westinghouse. My first educated guess - sounds like it's a voltage issue, most likely on the high voltage. Probably a capacitor on the power supply side of the motherboard or the capacitor in the flyback transformer. Just and educated guess.
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Feb 25, 2015 - Uploaded by Awesome Things
JVC LT-46AM73 LCD TV won't turn on after power outage. ...LCD & LED TV Repair - No Image & Blank Black ScreenFlashlight Test - How to ...
Using the menu or settings button on your remote, access the TV's menu and find the area for picture settings and zoom. You're likely set to a zoom mode, so cycle through the options until you find the zoom setting that sizes to your TV best. (On most widescreens, the best picture is often on the setting 'panarama.'
If the shrinkage is just the top & bottom then it is relatively easy/low cost fix. Most probably, a capacitor in the vertical section is nearing end of its life. This would be the biggest of the bunch and would be something like 47uF/50V.
If however, the shrinkage is on all four sides, then it is the master power supply that is at fault. Chances are the main B+ is getting low which cold be caused by the big filter capacitor or an erratic regulator. This is not a simple fix and would require the services of a qualified professional.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
well i beleive ur tv still have a warranty since it is purchased less than a month ago according to you. i suggest that u use it and have it check with their technician. it seems that there is an internal problem with your tv, particularly the vertical circuits. did u try to hook up another tv?
this symptom is caused by a poor vertical linearity wherein the image is compressed or stretched at the top or bottom of the raster