Question about Akai PT4298HD Rear Projection Television

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Convergence problems Like all of the other viewers... registration off, warped screen,

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  • dcoleman28 Sep 30, 2008

    I also have an Akai PT4298HD rear projection. I have the same problem where the screen has the warped, 3D look. It curves down at the center of the top of the screen, curves up at the center of the bottom. Convergence?

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Have you tried service convergence? If so, consider replacing the convergence board. You can get one for $75 at www.partstore.com, but if you are electrically inclined you may be able to just replace the faulty components in the board (if indeed that is the problem). You'll need a multimeter and a soldering iron and a service manual for the schematic.

Posted on Mar 24, 2008

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Posted on Jan 02, 2017

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2 Answers

Warped picture = can't seem to adjust with advanced convergence menu


Ur convergence it dead.U know how to solder right?Tries this websites for the convergence kit.Tv Repair World.com,Shopjimmy.com,Ebay.com or Partstore.com

Sep 25, 2009 | Mitsubishi WS-65511 65" Rear Projection...

1 Answer

Color on Panasonic 2004 is off and appears to be warped


It sounds like a convergence problem; most of these sets use two convergence IC chips that both need to be replaced; usually this can be done right in your home.

Aug 16, 2009 | Hitachi 53SWX10B 53" 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.

3dc9420.jpg
645fba6.jpg
0dcec37.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.

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

Curved/warped and completely out of convergence Image


Sounds like you need the convergence amplifiers replaced. Cost approx. $300.00 for expert to repair.

Jun 20, 2009 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Sometimes after the my TV is one for 20 mins or so the screen warps, shooting white/pink/green lights across the top and bottom of the screen and placing a horizontal black line at the bottom like hal


Your TV most likely has a problem in the convergence circuits. ( 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.

3dc9420.jpg
645fba6.jpg
0dcec37.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.

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.

May 19, 2009 | Hitachi 50FX20B 50" Rear Projection...

2 Answers

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.


Do not adjust any knobs as instucted in the previous thread if you TV have a convergence problem. Doing so will only make things worse. The blog does however show you how to fix other common problems with these sets.

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.

Feb 25, 2009 | Philips 60PP9363 60" Rear Projection...

2 Answers

Weird warped lines


Try the Magic Focus option on the menu.

Jan 19, 2009 | Hitachi 57F500 57" Rear Projection...

1 Answer

MITS WS-65869 The green CRT is creating a warped image.


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. 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, Zenith, and others. You can get a convergenece repair kit wiith instructions from the links below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms
  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted or warped
  • No Audio/Video - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV may have one or more of the following symptoms....
  • Dull looking picture
  • White looking picture
  • Halos around objects
  • Red/Orange looking picture

You can see some more examples and find a fix here
bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Dec 13, 2008 | Mitsubishi WS-65869 65" Rear Projection...

1 Answer

Warped picture Toshiba 65HDX82


Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:
ee1ca68.jpg

You can see more examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jul 12, 2008 | Toshiba 65HDX82 65" Rear Projection...

2 Answers

Warped Picture, Separated colors


Each color (red,green & blue) has an amplifier IC (STK-).
When there is a convergence issue,the first step is change both
IC's for reliability. Then check for open fuses devices,usually
pico fuses.Then re-check convergence alignment.......T.

Feb 07, 2007 | Philips 60PP9352 60" Rear Projection...

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