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

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Red and Yellow blurred picture

Our PTH5498 Akai was working wonderfully til a week ago. The picture all of a sudden turned to triple vision with red and yellow colors. We have lost our remote and have only used the sallelite dish remote for the last 7 years. Someone said it was the convergence could be messed up but we can't check it without the remote. Is this a fixable item and is it worth fixing?

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  • heelfan83 Mar 14, 2009

    Is the replacement of the convergence units something we can do ourselves?

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I had the same problem this week. I tried the convergence thing but it was impossible to fix. I still needed the repairman. He changed two convergence units ($325, parts and labor). Then the tv was still doing the same thing. We had to adjust the convergence and now everything is perfect. You will need your converter

Posted on Mar 11, 2009

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1 Answer

Akai PT5499hd that has suddenly lost color alignment


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with 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 - 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

You can see some more examples and find a fix herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Dec 23, 2009 | Akai PTH5498 54" Rear Projection...

1 Answer

I'M HAVING BRIGHT RED BOWED STREAKS ACROSS THE SCREEN AND DOUBLE VISION LETTERING


Sounds like a convergence problem. This means 2 Chips need to be replaced by a qualified tech.

N Sabre

Nov 08, 2009 | Akai PTH5498 54" Rear Projection...

1 Answer

My 1080i has a triple picture, can you help?


Hi,
It definitely can be fixed the IC chips (called STKs) that line up the images from each picture tube are failing.Sometimes a fuse or resistor go out along with the chips. The parts would cost around $100 + whatever labor charge if you hire someone.

Apr 29, 2009 | Panasonic PT-61LCX65 61" Rear Projection...

1 Answer

I have a similar problem, but the blue fluid in my pth5498 has turned yellow. I tried the website listed and it did not define if the "coolant" was green, blue or red. Where do I find the blue fluid? Do...


All the coolant is the same.It is clear . After you remove the old coolant clean the face of the tube to remove the algae -like contaminate then install new fluid.

Feb 27, 2009 | Akai PTH5498 54" Rear Projection...

1 Answer

AKAI 54


HELLO . IT SOUND'S LIKE YOU NEED TO REPLACE THE CONVERANCE BOARD . OR JUST THE IC'S ON THAT BOARD"GOOD LUCK
"

Jul 22, 2008 | Akai PTH5498 54" Rear Projection...

1 Answer

Double image


If your model number is the PTH5498 you will need to replace both convergence ICs they are stk 392-040 you can get replacements at the followig link and they will provide fre instalation instructions with pictures. Here is the link.
http://servicemanuals.vstore.ca/

Jul 11, 2008 | Akai PTH5498 54" Rear Projection...

1 Answer

Akai PTH54978


Sounds like your red tube (CRT) may have a short in it. Try turning down the color controls to zero then let me know what the screen looks like.

Jun 18, 2008 | Akai PTH5498 54" Rear Projection...

1 Answer

Red gun suddenly went wacko


Red Convergence IC bad.....small circuit board by itself up
above main boards..........replace both IC's for reliability...
STK392-040.........DO NOT USE GENERIC IC'S ! I use only
PANASONIC brand = no re-calls !!
Re-align when repair complete............T.

Jan 28, 2008 | Akai PTH5498 54" Rear Projection...

3 Answers

Akia tv


Replace Stk392-040 convergence IC's. Use Panasonic brand

for reliabilty.Re-check alignment....

Let me know by your rating....T.

Oct 22, 2007 | Akai PTH5498 54" Rear Projection...

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