Question about Akai PT5598HD 55" Rear Projection HDTV-Ready Television

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Auto Focus not working.

I have an AKAI PT5598HD When I try to use the auto focus, I get a message on the screen that says "No sensor data". Any suggestions? I'm pretty handy and want to try to fix it myself. Thanks!!

Posted by KuntryGuyy on

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Cary Farah

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I think your having convergance problems.

http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Posted on Dec 17, 2007

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Picture is bowed at the top and bottom of the screen. The "Perfect Focus" option does not work to fix this. Is there a way to manualy adjust the picture


If the perfect focus isnt working its caused by failed convergence. You can get the convergence board from www.tvrepairworld.com its under the Samsung / Akai circuit boards.

Mar 30, 2011 | Akai PT5598HD 55" Rear Projection...

1 Answer

AKAI PT5598HD will not turn on.


if you got to the following link and search by the model number you will find what your looking for.

Http://www.samsungparts.com/search/search.asp

The part number for the service manual is SM-PT5598HD

As the set is showing a blinking red timer light. you can check the following link out.
http://www.techlore.com/article/15444/

May 13, 2008 | Akai PT5598HD 55" Rear Projection...

1 Answer

Need convergence instructions foe akai pt5299hd


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.

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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 02, 2009 | Akai PT5598HD 55" Rear Projection...

2 Answers

AKAI PT5598HD - I HAVE REPLACED THE CONVERGENCE BOARD AND PICTURE AND SOUND ARE "ON" BUT "PERFECT FOCUS" WILL NOT BRING BLUE INTO FOCUS. "PF" STOPS AT 37% - RED AND GREEN PATTERS ARE SHARP BUT BLUE IS...


Most of these sets have a SCREEN/FOCUS block---usually all black with 6 controls----you need to look close at it as one row of 3 will be screen controls---don't touch those----the other 3 will be FOCUS- MARKED in little letters will be r,g,b(red,green blue). TWO ways to adjust the focus: 1. carefully locate the blue focus control and adjust to see if blue will improve in focus. 2. each of the 3 large lens where the picture comes out have a wing nut and a slot--you can loosen the nut and turn the lens---usually best focus that way is if the part that turns is in the middle of the available area to move it.

I should point out that all projection sets intentionally de focus the blue--the lines if blue should be clear but never as perfect as green or red--this is normal.

I do this here for free so if this has been helpful give me a vote here.

if you need direct help:
[email protected]

Aug 20, 2009 | Akai PT5598HD 55" Rear Projection...

1 Answer

Picture on AKAI 54 inch HD ready tv is not square.


akai is not a good brand of tv to start with they seem to have alot of problems and finding parts is impossible to do

Oct 16, 2008 | Akai PT5598HD 55" Rear Projection...

1 Answer

Describe your Akai PT5598HD 55 in.


looks like you have a convergance problem akai is made from samsung
· http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Dec 17, 2007 | Akai PT5598HD 55" Rear Projection...

1 Answer

AKAI 54" rear projection TV


The convergence sensors either need to be re-initilized or one of them is bad. The service menus needs to be acsessed to re-initilize the sensors.

Apr 08, 2007 | Akai PT5492S 54" Rear Projection...

1 Answer

AKAI PT5598HD


Your set has what is know as "convergence problem" because of the bowed lines and ghost in different colors,is really not an easy solution,the set should have 3 amplifiers(one for each color)and they need to be replaced with an exact replacement,sometimes just by replacing them the aligment should be close but soemtimes you nned to get into the service menu to do some adjustments,the amps(IC's) are mounted on heat sinks and all 3 have the same part number on its face,they normally read STK--- ---,every set uses different amps,If you are familiar with tv service you have now a place to start working but if you are not too familiar be safe and call for help from a servicer.Let Us know if you need more information.

Oct 31, 2006 | Akai PT5598HD 55" Rear Projection...

1 Answer

Actually...it's a Akai PT5299HD


I HAVE A AKAI PT5299HD TV AND WHEN I PUT ON THE AUTO FOCUS THE TV KEEPS TRYING TO FOCUS ENDLESSLY BUT DOES'NT FOCUS. IS THERE A WAY TO MANUALLY FOCUS THIS TV-MY WRITING ON THE SCREEN IS BLURRY?

Jul 31, 2006 | Akai PT5598HD 55" Rear Projection...

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