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.
It looks like theres a wave in the top of my screen on my jvc av-48wp30 not sure but i think it has something to do with the bulbs because the projection mirror wasfine and all wires seemed to be hooked up properly.. can you help? tell me where i can find the bulbs to replace them?
I may be a convergence problem.
Here are some of the most common symptoms and example photos of a convergence problem
Here is a quick test....
Using your original remote go-to the tv settings then goto the convergence section.
Try to adjust the red and then the blue convergence.
You should be able to move them up, down, left, and right.
If you can't move tJVC AV-48WP30 started displaying vertical lines ev - 2c07611.pngdirections your convergence chips are bad and should be replaced. This is a common problem. 
Solution #1
You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.
Jvc tv blurrey at bottom
Sounds like a hyer-board problem.
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
VIDEO STATUS.
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Usually answered in minutes!
same thing here, only its 52 inch and the lines are every 1/4 inch or so... all the way across from top to bottom, on game, tv, dvd, just not on tv menu boxes.
same exact problem. Is there a solution?
I have the exact same problem, can anyone help!!
I have the sme problem, lines run vertically and much worse when picture is dark. lines change color red to green.
OK, what is a hyer-board and how much roughly are we talking to get it fixed?? any ideas on who to take it to?? thanks!!
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