BOUGHT JVC AV-56WP74 IN JUNE 2004. 52

You can get it repaired. Its maybe a resistor/s thats losing its value and needs to be replaced.
You can locate this on the mother board close to the or near to the Fly-back transformer section.
Good luck.

G.

Mine is doing the exact same thing. Was wondering if you had gotten any good advice yet.

Check all of the large resistors on the convergence board. Usually at least one will be fried. Most likely, the 2.2 ohm if I remember correctly. Of course, make sure all the plugs are correct and plugged in.

Guns or CRT are probably ok. Your TV needs a convergence IC STK392-120 replacement. Lamp are used on LCD and DLP rear projection TV's. Color wheel are for DLP's. :)

Goto www.tvrepairkits.com and ask them to make you a chirping TV repair kit. They should have the parts to fix this problem.

I have the same tv set and about 4months ago Ihad the IC STK392-110 replaced. I was told that it was the most common problem with proj. tvs. It did solve the probem until last night when I went into the menu to change a audio setting and stupiditely accesed the convergence setting and decided to do an auto adjustment which mesed up my beutiful HD picture. Now I have the red out of alignment ad even after I did a reset and multiple manual adjustmets it is still off at the top and bottom af my screen.

If you guys do not have hand soldering skills or know how to use a multimeter, I would suggest to replace the whole assembly.
If you know how to solder you can just replace 2 ICs that are mounted on the big black heatsinks and possibly 1 or more resistors.
Click here to find the entire assembly for your TV.
The link provided is for parts for the AV-56WP74 model ONLY. For the 65 inches; you should contact the vendor and provide the correct model number.
Good Luck.

Use remote, sounds like Tv is in child lock

Check the coils on the main board. Coils mean round ferrite donuts (1 inch or less) with copper wires on it. I have seen this come out.
if not check convergence amp ic's
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Yes, one of your convergence IC's have gone bad. They are located on the convergence board inside the tv and there are two of them. They are inexpensive and easy to replace if you know how to solder. Watch out for the JVC booby trap sensor on the dvi input card. Don't run the tv with the back panel off unless you have disconnected the DVI card from the main board. I would even cover the little sensor with black electrical tape. Then it is safe to work on the tv when it's open and on. Well safe for those who know what they are doing.