Question about Projection Televisions

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AV56WP74 jvc tv

Was fine when I turned it off now it has arched red lines top and botom of screen and the red if off convergance will not fix it. in fact when I use auto convergance the little boxes fold over themselves. CAn you help me fix this.. 602-540-4909

Ray Freeman

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Repalce the Two STK392-110 Convergence ICs. You can get replacements at the following link with free instructions.
http://servicemanuals.vstore.ca/

Posted on Dec 17, 2008

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I have a jvc av56wp74 double immages in red and


Ur tv have convergence problems,it dead.U must have soldering tools and know how to solders to fix the convergence problems.U must replaced 2 STK convergence ICS,and some or all it resistors.Tries websites like Tv repair World.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.The shop will cost u $300-350 for parts and labors.

May 05, 2010 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Red lines all over the screen


this set(AV56wp74) was first made in 2003----if you use the remote for the set and go into the customer menu---select convergence----once there see if the red and blue will move left/right and up/down----if either color will not move in any one of these directions----you have a bad convergence IC--this set uses 2 of the STK-392-110 output ic chips---both need to be replaced and the set adjusted with the original JVC remote control. I hope this has been helpful.

Aug 11, 2009 | JVC AV-56WP74 56" Rear Projection...

2 Answers

Colors arched and overlapping


if the option for convergence is still listed under the setting section of the on screen menu, then you need a convergence power supply board. If the convergence option is missing from the menu you need the ITC222 convergence missing repair kit. You can get either one at the following link they include instructions for the repair.
http://www.tvrepairworld.com/

Jul 13, 2009 | RCA R52WM24 52" HDTV Projection Television

1 Answer

JVC av56wp74 red lines won't converge. How can I fix it myself. I have seen that a few people have done it themselves, wondering if I can get some info on how much parts cost and if It is the chip is the...


1. disassemble front speaker panel.

2. locate circuit board in front with the 2 large black or silver heat sinks standing up. (this is your convergence board).

3. disconnect all the wires on this small board, but make sure you take a picture first to know where they all go.

4. look for 2 black cips that says stk ***-***.

5. order replacement chips on line.

6. learn to solder before chips get to you home.

7. watch you tube videos titled "how to fix tv convergence.

8. wa, la send me some money to show me your appreciation, lol.

Jun 04, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Arched pink lines across screen. Now green and pink double stacked wording.


Projection sets have two very common problems.

The first common problem is convergence


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Oct 25, 2008 | Sony KP-57WS500 57" Rear Projection...

1 Answer

1991 hitachi 60sx1k rear projection, lines are bowed at top and botom


Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projeciton sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
  • 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.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some photos of convergence problems.

42d3683.jpg

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Here is a quick test....

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

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

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

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

Oct 23, 2008 | Hitachi 50DX20B 50" Rear Projection...

2 Answers

Green flickering and not lined up with red and blue


well I am not tom but your tv is having a convergence problem only a technician may be able to replace the bad ic inside the set

Aug 23, 2008 | Toshiba TZ50V51 50" Rear Projection...

1 Answer

Jvc av56wp74 rear projection tv


http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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

2 Answers

Convergence problem


At present, bad connect(s) on red convergence IC. Soldering pins will fix temporarily.
Usual fix = replace STK392-110  IC's. A 400.00 dollar repair at
your local tv shop......T.

Oct 24, 2007 | Philips 60PP9202 60" Rear Projection...

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