20 Most Recent JVC AV-56WP30 56" Rear Projection Television - Page 5 Questions & Answers

Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929

I will be doing this same repair for a customer in the next two or 3 days, Without looking at it, I believe the resistors are orange or pink in color and labeled 3.9 ohm, but i will get back to you after I pull the board and have it in my hand.

this is a problem wit your stk392-110 convergence IC's - One has gone bad and the both should be replaced. Also, check the large resistors near the convergence IC's - it sounds like one of them may have burned up..

you have bad convergence ic and or resistors
this repair usually requires a repair tech

You have two convergence amps that need to be replaced on the convergence board.This is a very common problem with these units.The part # are STK392-110 but I would upgrade to a STK392-120 or a STK392-150.Also there may be a couple of low ohm resistors that need replacing.Depending on your electronics experience this job is pretty much a straight forward soldering job that requires a certain amount of knowlege.These parts can be obtained from partsstore.com.I as a technician charge between$185.00 in shop and $250.00 inhome for this repair.It is well worth it as this particular chassis really did`nt hve very many problems, and once fixed you will have a like new picture.Good luck!!

gave the crt's a little rat-tat-tap be careful!!!!!!!!!!!!
There are other possibilities as well. Look at the front of the green projector tube and see if it looks like the cooling liquid has been leaking out or if it is not clear all across the screen.
could also be convergence ic's

its hard to adjusttheconvergence once its messed up and i know you dont want to hear this but your best bet is to have someone come out and reconverge it for you so you doont go nuts trying to do it and not get it.i don like tv repairmen as a rule but they do know what they are doing and no matter how many people you ask on here you will always get a different answer

You have two convergence amps that need to be replaced on the convergence board.This is a very common problem with these units.The part # are STK392-110 but I would upgrade to a STK392-120 or a STK392-150.Also there may be a couple of low ohm resistors that need replacing.Depending on your electronics experience this job is pretty much a straight forward soldering job that requires a certain amount of knowlege.These parts can be obtained from partsstore.com.I as a technician charge between$185.00 in shop and $250.00 inhome for this repair.It is well worth it as this particular chassis really did`nt hve very many problems, and once fixed you will have a like new picture.Good luck!!!

its the cause of internal settings that should be made proper. just click the link and download the exact model of your unit and check out for the settings in the trouble shooting and picture adjustment options.
http://tv.manualsonline.com/manuals/mfg/jvc/jvc_projection_hdtv_product_list.html

Reset is done by unplugging the ac cord for a time,then plug
back in...............Please verify model number off sticker on the
                            rear of your tv...let me know.....T.

The two convergence ICs labeled STK392-110 are bad . Likely the resistors that go with them one or more are bad too.
If you have patience can use a ohm meter, solder properly and have good vision. You can fix this problem .
Parts can be found at www.eletronix.com . Good luck, maicomasher

im not quite sure of your exact situation but you can go into the menu and make sure you have the audio set correctly or check the cables inthe back. you can also check the settings on your equipment to make sure you are outputing the audio in the correct manor

I hope you are aware that JVC booby-traped the DVI modue in this set to avoid
tampering. If you remove the back without taking precautions say bye to your digital
input. See:http://www.iwaynet.net/~nesda/Jan04/Jan0413.html

Steve
Yeah, I've read that. I haven't taken the back off, but I bought it
second-hand, so it could have been serviced in the past. However, there
is a way to reset the HDMI module from within the service menu (you do a
self-check, then turn off the tv from within the menu and unplug for 30
seconds, according to a few forums I've read). However, I don't know
how to get into this service menu.

Thats not what I was told by JVC, but if you think it will fix it give it a try;

SERVICE MENU setting
a) Press [SLEEP TIMER] key and, while the indication of
SLEEP TIMER 0 MIN is being displayed, press
[DISPLAY] key and [VIDEO STATUS] key on the
remote control unit (Fig.2) simultaneously.
b) The SERVICE MENU screen of Fig.1 is displayed.
c) Verify what to set in the SERVICE MENU, and set
whatever is necessary

Be very careful NOT to change any settings if you don't want to create a boat anchor. Quoted from a diff. thread from tech-archives.net

visit http://fletchersite.com/documents/ask.html for an immediate solution to this problem.

most likely its is feedback from somekind of electrical applaince. or the connection is bad try unhooking the cables and then hooking them back in. if that doesnt work you could replace the cables and or buy a line conditioner at best buy or curciut city they can be pricey from 50.00 to1000.00. but the better the cables and line conditioner the better the picture

the --ic --has not been fitted properly.

No its a tube and not a bulb. If thew line is green then theres an issue with the red and blue as the green is stationary on most sets unless thers a green centering ? Its a componet on the convergence board thats bad or going bad but if you replace any components on the board most likly your gonna need to do a convergence alighnment I would let a pro handle this repair unless your an experineced repair tech Good Luck

does your TV has the stat adjustments in the CRT or near the chroma IC it is a trimmer resistor or a rheostat try to adjust it...

check if there is any cold solder/ loss connection in the CRT board, also check the transistors in the CRT and resistors.