Question about JVC AV-48WP30 48" Rear Projection Television
Recently, my JVC AV-48WP30 started displaying vertical lines every inch or so from the top to the bottom of the screen. They're very, very narrow (about a "pixel" wide, if you will) and affect every input on the unit, including the DVI, component, TV (RF), and S-video inputs. They "modulate", in that they change color, slightly, and intensity, almost like an amplifier or transistor is "clipping". Mostly, they appear white on dark backgrounds and vice versa, and the lines are not solid top-to bottom, but rather like some pixels are on and off in each line. They do not shift side to side at all, and always run full top to bottom. They do _not_ appear on the onscreen menus, however, only on the tv signals. I have _no_ idea what could be wrong, however, and no idea as to where to start looking. Any help would be most appreciated.
This may not be the problem but its worth a try:
The plasma display screen is made of a matrix of elements connected to cables along the side and top. On your unit, some of these many, tiny connections are making contact intermittantly thus losing the elements in that area. These contacts are held in place with just pressure and if that is disturbed, you lose that line of elements. Try squeezing the cabinet of the TV on the outside at the top in the area of the loss and see if that makes a difference. May have to go inside and see if the contact assembly is disturbed or warped or something.
Posted on Dec 31, 2007
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Posted on Jan 02, 2017
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Mar 06, 2013 | JVC AV-36F802 36" TV
This is called vertical pincushion IMHO.
With a bit of luck you should be able to adjust this from the service menu.
Access the service mode: set SLEEP TIMER to 0 MIN.
While this is still displayed, simultaneously push DISPLAY and
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