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

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On the initial set up menu I go to the convergence screen or something like that and I can move the little plus sign left and right to make the blue and red plus sign white but am unable to move it up and down...any suggestions?

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One or both of the STK-392-110 CONVERGENCE IC chips most of these sets use is bad.

Most of these sets have the convergence board all the way at the front of the set--can gain access by removing front under the screen--that is held in by 2 screws on either side in the back and two tiny ones where the front control door is located.

Behind it there is a inspection plate--if you remove it you will see the board right behind it with 2 metal heat sinks with fins. The chips are on the other side of the heat sinks.

This if you know how to solder etc is not a very hard set to do this repair on--Total parts cost if you buy them on Ebay (I can tell you the best seller there) is under 30 dollars.

If you think you can do the repair I can tell you what you will need and how to remove that board---the board is very easy to get out of the set--with it out you replace the chips and check for any damaged resistors--usually just both chips need to be replaced.

This type of repair usually takes me about a hour---I have done hundreds of them.

If you can not do the repair--most shops are going to get 300 or more for this repair.

Let me know if you have questions and I will help you.

If this information has helped you, rate this solution as I do this here for FREE.

SD TECH

Posted on Nov 16, 2009

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1 Answer

Hi in the convergence to adjust the color the red is above the plus sign in 3 spots and will not come down and they are not straight


does the blue convergence crosshairs move up and down left and right? Does the red move left or right. does the red move up at all. this might indicate a faullty resistor, bad ic or just bad convergence data. let me know i am here to help

Nov 04, 2010 | Toshiba 43A62 43" Rear Projection...

1 Answer

Lines, a little blurry, a little movement


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 projection 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

7859b01.jpg

e87380c.jpg
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 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

Jun 10, 2010 | Hitachi 51F59 51" HDTV Projection...

1 Answer

3D effect where the blue color is a little lower than the rest of the colors. More noticeable on words.


Projection TV2_bing.gif 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.

Convergence problems are very common on all Projection TV sets including Sony, Samsung2_bing.gif, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith2_bing.gif, and others. You can get a convergenece repair kit from the link below.

Common Symptoms include....

  • Screen looks 3D2_bing.gif
  • 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 - TV may also make a chirping noise.
Here are some photos of convergence problems.

49abec3.jpg
f0add3d.jpg


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.

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 flash2_bing.gif 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 solution

93a1209.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 know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

May 20, 2010 | Philips 51PW9363 51" Rear Projection...

1 Answer

The picture arced and looks 3D. Plus the screen


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.

Convergence problems are very common on all Projection TV sets including Sony, Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit from the link below.

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 - TV may also make a chirping noise.
Here are some photos of convergence problems.

49abec3.jpg
f0add3d.jpg


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.

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 solution

93a1209.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 know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

May 10, 2010 | Mitsubishi VS-50607 50" Rear Projection...

1 Answer

Have a projection tv...RCA model 61830BL. Had


Hi the green cross it cant move that the reference for red and blue adjustement ;just try to put the red and blue cross over the green pattern then quit/
if that doesnt work you probly have the stk-xxx ic
who control the color alignment ,are blow/
you will have to replaced and make the convergence
check if you have an auto adjustement for that most projection tv have one...
hope that help..

Mar 28, 2010 | RCA P61830BL 61" Rear Projection...

1 Answer

Sony KP-43T75 rear projection set does not finish flash focus. According to manual it should finish by converging to white cross. Mine ends with a pink tint and a blue ghost to the right. Is this something...


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Techman

Your TV most likely has one of two possible problems. Problem #1: Convergence Chip 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 is a quick test.... Using your original remote go-to the TV settings then go to 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. Solution #1 you need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kit for most models. If you don't see kits for your set send them a quick note under the contact us button please, you will get an answer within 24 hours or so.(excluding holidays Good Luck
Techman

Sep 06, 2009 | Televison & Video

1 Answer

Picture is distorted from center on my 65


You do have a failure in the convergence circuit of your set. If you are good at soldering you can replace the IC's yourself. They are on the large circuit board on the left side of the set looking from the back, and attached to a large aluminum heat sink. If you don't feel comfortable doing that, I reccomend removing the board and sending it to PTS corp in Indiana. They are pretty reasonable repairing boards, and a lot less than buying a new one.

May 31, 2009 | Sony Grand WEGA KDP-65WS550 65" Rear...

1 Answer

Picture is distorted from center on my 65" Sony projection TV.


hi. this will be an easy fix for you if you are a good solder. you will need to replace the convergence chip that is located on the PC board(main). this chip is damaged and it has failed due to this damage that has occurred. click below for your new convergence chip(stk).

CLICK HERE

May 21, 2009 | Sony Grand WEGA KDP-65WS550 65" Rear...

1 Answer

Shadow images and scrolling banner curves upward and back down.


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip 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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
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.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Mar 15, 2009 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

I have a hitachi 50FX18B and the convergence lines...


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

7859b01.jpg

e87380c.jpg
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.

Jan 23, 2009 | Hitachi 50FX18B/19K 50" Rear Projection...

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