Question about Akai PTH5498 54" Rear Projection HDTV-Ready Television

3 Answers

Convergence Issues I have double images, and the red and blue are all mixed up, I tried setting the Red Convergence but nothing happens, the book says to use the remote, but when I try this nothing moves. I can't set the Red or the blue. Is there a problem with the convergence not working? I've called people locally and no one wants to work on this brand! I spoke to one place and they were willing to come out, but said it could cost $350-450 to fix it? Could we get the part and fix it ourselves? April

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  • APRIL LOWE Jan 02, 2007

    My tv is also 4 years old, Had a service guy come out Saturday. He said I need to replace the CRT, I looked on-line it was about $23.00, however it was sold out! ANYONE know where I can purchase this from?
    AKAI/SAMSUNG PTH5498

  • APRIL LOWE Jan 08, 2007

    CRT SOCKET PART# AA41-00406A.
    IS YOURS THE AKAI PTH5498 MADE BY SAMSUNG?

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When you can't move a color (Red or Blue) in your convergence settings, the STK Amplifier IC is bad for that color. That is the main way to tell if an STK IC is bad.

Posted on Jun 06, 2007

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I a having the same convergence issues. What is the crt he said to replace?

Posted on Jan 08, 2007

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My cousin had this same problem and had me fix it for him. As I have found in most forums, it is a problem with the amplifier IC's., There are two of them with 3 channels each. The part number for them is STK392-040, at least in my cousin's case, check yours it will be printed right on the chip. The IC's are ~ $10/each, and shipping was $9 here: http://www.smelectronic.com/1/STK0_STK5/semicon.htm If you know how to solder, or know someone else that does, its fairly straight forward. Just pull the convergence board out of the TV, unsolder the IC, using some solder wick or a solder sucker, both available at radio shack. Next remove the ICs, you may have to use a knife or screwdriver to pry them off of the heatsink. Then put the new ICs in and solder them in place. Put all the screws back in, run the auto-convergence, maybe twice, and you're golden. Note: in my cousins case all of the resistors were fine, but you should check them to make sure none have shorted or opened.

Posted on Jun 25, 2007

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1 Answer

Double Images Too much Red and Green


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.

Dec 03, 2009 | RCA D56W20 56" Rear Projection Television

1 Answer

My picture has double image and red shadow top and bottom


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.

Apr 03, 2009 | Hitachi 43FDX15B 43" Rear Projection...

1 Answer

Double vision on my Mitsubishi 46 inch width screen--TV is 5 years old


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.

Mar 16, 2009 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Double image on my Sony KP 43t90


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.

Feb 22, 2009 | Sony KP-43T90 43" Rear Projection...

2 Answers

Double Image Red and Green


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


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 email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

Feb 08, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

2 Answers

Double Image


need to change convergence ICs

If you need more info., let me know and I can go over the details
[email protected]

Sep 08, 2008 | Sony KP-57WS510 57" Rear Projection HDTV

1 Answer

Red double picture with green and blue


convergence problem there are 2 integrated circuits inside the set needs to be replaced

Aug 25, 2008 | Toshiba TZ50V51 50" Rear Projection...

3 Answers

Red convergence wont move


if the red line is blurry and you have adjusted the screen focus control and does not work then you prob have a bad red CRT or bad red CRT fluid.........

convergence STK have nothing to do with the red being blurry

Dec 09, 2007 | Mitsubishi WS-55809 55" Rear Projection...

4 Answers

Akai PTH5498 54in, red and blue all over the place.


I had the same problem. you have to type in a code to bring the color grid up then adjust them left right up or down...But I lost the code and i need to do it again. So if anyone knows the code it will help us all out. It was something like mute-0-8 then click 7 for red and so on but I cant remember. I got the info from a downloadable repair manual it was very is to understand and read.

Dec 21, 2006 | Akai PTH5498 54" Rear Projection...

1 Answer

Samsung HCM5525W TV red blue outlines on images


The Samsung has bad convergence IC's most likly. This should be repair ONLY by a trained technician as a TV set is not a place to experiment or tinker with because of the extremly high voltage inside. This repair should cost you in the range of 250 to 400 bucks . Good Luck

Jul 31, 2006 | Samsung HCM5525W 55" Rear Projection...

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