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The tubes rarely fail in this model so it may be a convergence issue instead. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. Here is an example video
You will need to replace the Convergence ICs and resistors you can get the JVC repair kit called the AV48WP74-65WP74 convergence repair kit from www.tvrepairworld.com which contains the ICs , resistors and the CD with instructions,
It's recommended to replace all the defective parts first because if you only replace the defective resistor, it might burnt again if the convergence IC is shorted internally. I would also suggest to measure the other low value resistors with multimeter.
If you remove the lower front panel where the speakers are then the small access panel you will see the convergence module right there in the front. It will have the two Convergence ICs attached to that heat sink. They are probably STK392-110. Then if you would like let me know and I will post a link where you can get the parts along with step by step instructions on how to do the repair.
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 Sony Convergence http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/ http://www.techlore.com/article/19631/Sony-Convergence-Procedure/
Mike, convergence adjustments are in your menu, usually under "video" settings. You have to adjust red & blue onto the green, when you`ve done it correctly the "cross" will be pure white, if you cannot move either of the colors left, right, & up, down then the convergence IC`s have failed and will have to be replaced, hope this answers your question, BMW Rider
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.
The convergence ICs probably have a cracked solder joint on the foil side of the circuit board.
Re-flowing the the solder would help.
I will always replace the convergence ICs when doing this job. The labor remains the same and you will have to pay a few extra bucks for the parts.
To fix this yourself, you will need to be able to identify the two convergence ICs,in this model they are in the front of the set, have a basic knowledge of electronics and be able to use a soldering iron (Use a dielectric compound when changing any IC attached to a heat sink). You will also have to do an alignment through the service menu.
To find a servicer in your area go to:
It's the JVC servicer locater site. Call the repair shop listed and ask them what they charge for a convergence job on your set. That should help you decide which direction to go.
Hope this helps.