Question about JVC AV-48WP30 48" Rear Projection Television

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JVC 48WP30 Rear Projection

I turn on the tv and after about 10minutes it flickers red and sometimes green over the image your watching then goes away and keeps coming back it's perfectly clear but the lines are annoying when they come on and off. Please help? I don't know where to start?

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Are the lines real thin on a slight curved angle when they appear? If so it is probably related to the either the CRT PC boards or the Circuits for the convergence yokes attached to the neck of the tubes as they are all connected in series to each other. let me know if you need further assistance and or parts.

Posted on May 21, 2008

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Horizontal lines flicker on jvc av-48wp30


Next time you see it select convergence in the menu, there is a way to adjust or at least see if it is out.

This is actually not a real hard set for this repair IF it is your problem.

The board that needs to be removed to get at the parts is not large and does not require a lot of time to get out.

The set uses two of the STK-392-110 chips for this---at for example Suburban Electronics you can get a pair with shipping for under 20 dollars.

In the customer convergence mode what you are looking for is red lines where they do not belong and if red looking to see red will move left/right and up down in a area that looks off.

If the red for example will not move in some direction change both chips.

If you want help I will attach some photos here of exactly what the board in this model looks like and the chips are easy to see.

Confirm first this is your problem.

I can tell you exactly how to get the board out and what you will need for the repair.

There are "kits" for this but they run over 80 dollars and have a number of parts you will never need or use.

If you have a soldering iron and know how to solder the repair should cost you in parts etc under 30 dollars.

Take it from me, I have done a few hundred of this model for this problem. Pretty good investment for a set with few other problems, life on the replacement parts is 5-7 years.

Let me know if want more information or help.

SD TECH
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1 Answer

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Ur convergence is dead.Must replaced the 2 convergence ICS and all it resistors.The shop will cost U $300 for parts and parts.

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1 Answer

Have a JVC AV-48WP30 rear projection tv set and the green seems to be out of place. the green image is lower than the others and is in a wave shape on top of screen and bottom.When I adjust the convergence...


Your convergence IC's are bad. If your not doing the work it will probably cost in the neighbor hood of $250.00 for a service company to do. Not a major repair.

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It sounds like the begining of as convergence problem or cold solder on convergence board - have a tech have alook

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convergence board problems u will nedd replacment soon

plz do rate this post

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You need two STK392-110 Convergence ICs. You can get repalcements at the following link, and they will provide free instalation instructions with picture so you can do the job yourself. Heres the link.
http://servicemanuals.vstore.ca/

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While it is true JVC tubes rarely fail, they can give trouble.
Another possible solution is bad screen / focus block......
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