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

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Convergence problem with my jvc model av 48pro

Hi frnds i just got a problem with my tv,there was a convergence problem,i used to change the two STK 392 110 but it still have the same problem.when i switch on,the picture is like a horizontal line and after some minutes it start to open but not full size.can someone help me plzzz

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Is replacing the ic something I could do myself? Is there more than one ic that I would have to replace?

Posted on Jul 19, 2008

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Hi i have a jvc tv model av-56wp30 it has a red line in the corner of the tv what seem to be the problem and will it cost me alot of money to fix?


Ur tv have a problems known as a convergence problems,it dead.The tv have colors lines R,B,G mis alignments,have colors shadows pictures or 3D picture look alike?The tv convergence board it is dead.The tv convergence board,must require repalcing 2 STK convergence ICS and some or all of it resistors too.The tv convergence board is fix,will solved ur tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Dec 04, 2010 | JVC AV-56WP30 56" Rear Projection...

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Convergence


hi....... i have a 65in tv.....i have changed the 2 ices stk........its good now...but the convergence is not very good.when i try the manuale conver.... the lines of colers do not go with each other if you fixed the uper lines the dowen ones go so rong........i hope you can help me.....thanks

alshareef1973@hotmail.com

on Jul 02, 2008 | JVC AV-65WP74 Rear Projection Television

2 Answers

The tv looks like it is in 3d. when i try to adjust the convergiance the plus signs on the left are bent


do not play with this tv replace the stk ic chips and the resistors around the stk chips ,cant miss em about 2 inches big with heat sinks on them.

Sep 11, 2010 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Jvc av-48wp30 blue to align convergence


Tv colors R,G,B don't alignment any colors.Tv have a convergence problems,it dead.Tv convergence board require changes 2 STK convergence ICS and some or all it resitors to solved convergence problems.The shop will cost u $300-350 for parts and labors.

Jul 11, 2010 | JVC AV-48WP30 48" Rear Projection...

2 Answers

JVC AV-48WP30 , how to change convergence


First of all tools,requirement to do the work on the Convergence board to do changes the 2 STK convergence ICS and some or all it resistors.U have a soldering iron,desoldering pump or soldering wicks and solders?Don't?must buy to do desoldering and soldering?Tries Amazon.com to buy solders.Tries wesites like Tvrepairworld.com to buy the convergence kit to replaced ur self,and buy the soldering iron here it have the desoldering pump attach to the sodering iron it self.For video tutoring how to take out convergence board out of the tv and replacing the 2 STK covergence ICS and some or all it resistors.Might included in the buying of the convergence kit,not,Try You Tube type in convergence problems,will have video some body doing it.

Jun 07, 2010 | JVC AV-48WP30 48" Rear Projection...

1 Answer

JVC Model No. AV-48P575. Picture goes all distorted after it's been on awhile, then a bit later it goes back then distorted again. Can someone please help


Ur tv are developing a problems call convergence,it dying.The convergence board the 2 STK convergence ICS,and some or all it resistors are dying.These parts are must be changed to solved the convergence problems.The shop will cost u $300-350 for the parts and labors.

May 21, 2010 | JVC AV-48P575 48" Rear Projection...

1 Answer

JVC AV-56WP30 Convergence Problem


Hi

You have defective convergence correction amplifier IC replace the STK IC...

Thanks!

Jun 12, 2009 | JVC AV-56WP30 56" Rear Projection...

1 Answer

Convergence


did you replace the convergence resistors with the ICs? The resistors often get increased resistance when the ICs go out and if they dont get replaced you can have a next to impossible time adjusting the convergence properly, as they have to be within 5% tolerance. You can get the resistor kit for your JVC at the following link. Its Called JVC convergence resistor kit #1. Heres the link.
http://servicemanuals.vstore.ca/

Jul 01, 2008 | JVC AV-65WP74 Rear Projection Television

1 Answer

Jvc convergence


1024x768 Normal 0 Convergence

When A REAR PROJECTION TV has coloured outlines or a 3D image the Convergence Circuits most likely need attention.

Replacing the output amplifiers (located within the Convergence IC's) allows the pictures to line up correctly, and no more color outlines.

This is the most common fault in all makes of rear projection TVs.

Some models of TV require major disassembly and considerable shop/manufacturer's support to repair because of their design that causes other power supply or vertical deflection problems. The poorly designed products require a "bench" repair that can typically cost from $350 t0 $700.

Some TVs are designed for on-site repair and have more reliable circuit design that does not usually cause damage to other parts of the TV when convergence chips fail. The ones that usually allow reliable on-site repair are JVC, Samsung and Hitachi.

It is normal to have some resistors in the circuit burn up or increase in value from the heat (from 2.2 ohms to 5 or 10 ohms). These resistors must be replaced with the right value or the chip may fail again.

This is not a simple repair like changing batteries or a fuse. Reading through the other posts shows many that try and end up with bigger problems.

Your JVC uses STK 392-110 IC's. Misinformed people replace the IC's with other "new and improved" IC's, like STK 392-150. These are devices with different characteristics and require different value resistors in the circuit. Replacing with the STK 392-150 will cause overheating of the resistors and a damaged IC.

If you are in Calgary, I can help. If not, get someone that has experience working on your JVC. My website is below with some costs and explanation.

calgaryconvergencerepair.weebly.com/convergence-explanation.html

Good Luck,

Easyab

Jun 18, 2008 | JVC AV-56WP74 56" Rear Projection...

4 Answers

Black pop-up screen when pressing any menu features on remote


check for closed captioning. make sure it's set to off.


C-Dog

Feb 03, 2008 | JVC AV-48WP30 48" Rear Projection...

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