Akai PTH5498 54" Rear Projection HDTV-Ready Television Logo

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

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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

Posted by APRIL LOWE on

  • 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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3 Answers

Anonymous

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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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Anonymous

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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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Anonymous

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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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Related Questions:

1helpful
1answer

Have a 46f500 hitachi projection television. Started out with a blue reversed arc hanging down on upper right. Now images are not focused, and red, blue and green are layered. Double images. I looked...

It is a convergence problem and set uses two of the STK-392-150 CHIPS. Both will have to be replaced and the set adjusted.

for more information let me know if you can solder and your skill levels.

SD TECH
6helpful
2answers

Getting "red" double image

Your TV most likely has a 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

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.

The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.
2helpful
2answers

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.
2helpful
1answer

Convergence perfect focus not working and double vision

The problem you have is the 2 STK - 392 convergence integrated circuits need replacing the cost in the UK is about £150.
SUPER8
0helpful
2answers

Double Image

need to change convergence ICs

If you need more info., let me know and I can go over the details
[email protected]
0helpful
1answer

Red double picture with green and blue

convergence problem there are 2 integrated circuits inside the set needs to be replaced
3helpful
1answer

Red,Blue,Green Image

YOu have convergence issues. Ok first question. IN your setup menu do you have the convergence option/ if you DO not then it can be a specail fusable link. fl231 if you do. next question do the picture bow in at the middle. if you do then it possibly a convergence power supply issue. next if you go into setup convergence does the crosshairs adjust up or down left to right on both blue and red. I if so then theres is a chance that it can be a convergence adjusment or a amplifer problem AS always THIS SET CAN GENERATE LEATHAL 380 VOLTS EVEN WITH SET UPLUGED SO BE CAREFULL.
0helpful
4answers

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.
0helpful
1answer

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
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