Question about JVC AV-56WP74 56" Rear Projection HDTV-Ready Television

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Jvc 56wp74 i have the jvc 56wp74 and the top left of the screen is bowing downward and then real thin red squigly lines come through the middle with double vision and then it goes normal and then starts acting up again. are you familiar with this problem?

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  • thecombfacto Oct 26, 2008

    would this best be fixed by replacing the board? underneath one of the ic's it looks as if it is turning the board brown and one of the two was much warmer than the other

  • thecombfacto Oct 26, 2008

    i found this board at partstore.com ssb-5068a $184

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  • JVC Master
  • 8,617 Answers

Sounds like a solder related issue on the convergence ICs. They are acessed through the front of the TV behind the speaker grille and then remove the small acess panel and you will see the convergence amp board with the two ICs on it.

Posted on Oct 26, 2008

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1 Answer

JVC AV-56WP74 56 in. Rear Projection red projector is not showing images and big red line in tv


If the red line looks like a swoosh of red across the screen it may be the convergence Ic having an issue.

Jul 04, 2011 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Color blue will not adjust on crt color conergence adjustment , picture on tv is double with blue on right side, auto/manual mode , the color blue will not adjust on right or middle side from side to side,...


This is a convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$300

Sep 27, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

My red color on the color convergence does not match the blue and green color


This is a very common failure on Projection TV sets.
Screen looks 3D
Colors don't line up
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed or warped.
You can see some example photos and find a solution here...
http://www.fixya.com/support/r2861627-updated_convergence_problems_amp

Sep 05, 2009 | JVC AV-56WP74 56" Rear Projection...

2 Answers

Picture doubles and looks like 3d


Your TV most likely has a convergence failure. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem


  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
Here are some photos of convergence problems.

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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Jun 21, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

JVC AV-56WP74


there are two i.c chiyou have to replace they have to do with the conversion go to electronix.com you can both for 5 a piece plus 5 for shipping and handling so 20 dollars total you have to replace both of them

Oct 13, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

JVC AV-56WP74 56 in. Rear projection blurred image


Check that the 3 output plugs are in the right sockets (Red, Blue, Green) There is usually a felt pen colored mark on a white tape on the plug in wires. The Board sockets are marked Red, Green, Blue.

Easyab

Jun 20, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Convergence issue with blue


You need to replace the convergence Ics located up front behind the speaker grille numbers STK392-110 you can get replacements at the following link and they provide free tech support and instalation instructions with pictures. heres the link.
http://servicemanuals.vstore.ca/

May 06, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Me again


With the bow in it it's likely the convergence has failed... Where did you purchase the amps that you put in it? Did you use a good heat sink grease to mount them?? Did you really scrutinize the resistors in the feed and return circuits???
Bill

Mar 31, 2008 | JVC AV-56WP74 56" Rear Projection...

2 Answers

Screen is bowed (top and bottom) Color has a green and purple tint?


Your convergence has failed and needs to be repaired. 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. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix.
Here is an example video


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Jan 15, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Double vision On JVC AV-56WP74 56


You have an convergence problem, There are 2 IC's that go bad and a few resisters that can change value. If you flip the board with the Chips inspect the pins for cold solder joints. The IC's can be purchased from matelectronics

Jun 17, 2007 | JVC AV-56WP74 56" Rear Projection...

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