Question about Akai PT4298HD Rear Projection Television

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Akai PT 4299HD picture shift

While trying to fix convergence problem I moved the screen on my AKAI PT4299HD now its not centered. Everything is shifted to the right and I can't figure out how to get it centered again.

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  • jlf634 Feb 18, 2008

    I was screwing with the convergence and some how pushed a button while in that mode, by the way the screen was perfect before I played with it, when the button was pushed I noticed that the bars on both sides of tv, while in 480i mode were shifted one smaller that the other. So now I am trying to shift the colours back because I have found the button to fix the centering of the tv. but color is shot.
    any help is appreciated.

  • jlf634 Feb 18, 2008

    I found a service manual and was able to realign the colors with the
    grids on the screen. "The color shot," some how I pressed the save key
    on the remote when the red grid was on the screen and it was out of
    line with the others and caused blurring.

  • jlf634 Feb 19, 2008

    Yes, I got it, still have some fine tunning to do. As of yet the auto focus will not work.

    Thanks again

  • Vista Electronics May 11, 2010

    What does " color is shot" mean ?

  • Vista Electronics May 11, 2010

    Did you repair convergence circuit? STK392-040 IC's replaced ?

    Symptom Changed ?

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  • 1,694 Answers

Sounds like you got it ! Note for the future....if you change
convergence amp IC's...be sure to use top quality name brand
only....no generics ! I use Panasonic with no re-calls.......T.

Posted on Feb 19, 2008

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2 Answers

AKAI rear projection TV won't turn on


possiblity convergence needed...
main power board malfunctioning
contact akai service center

Apr 26, 2010 | Akai PT4298HD Rear Projection Television

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My Akai TV Model number PT5598HD shows two of everything, how do I fix this?


U can't.Ur convergence is dead.Try website Tv repair World.com to buy a Convergence board to replaced.Well solved the convergence problems.The Samsung/Akai use the same convergence board.

Feb 15, 2010 | Akai PT5598HD 55" Rear Projection...

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Hi ! We just obtained an Akai Projection t.v.


U can't,it ur convergence it dead, must replaced parts.U know how to solders?Tries these websites Ebay.com,Tv repair kits for convergence board or parts.

Nov 14, 2009 | Akai PT4298HD Rear Projection Television

1 Answer

Red, Green convergence lines are wavy


Projection TV sets have two very common problems listed below.

Problem #1) Convergence


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,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

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

*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

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Sep 16, 2009 | Akai PT4298HD Rear Projection Television

1 Answer

Akai/Samsung PT4299HD Convergence Problem


Ck 3 low ohm resistors 2.7 ohms they will be on same board as ICs.

Feb 13, 2009 | Akai PT4298HD Rear Projection Television

1 Answer

I have a red and blue shadow in my picture


i think you need a new convergence board they rin from about 88.00 to about 140.00

Sep 08, 2008 | Akai PT5598HD 55" Rear Projection...

1 Answer

Akai pt4299hd


replace your STKs big black Ics STK394-250 there is 2 of them thses are your convergence ics.Also ck resistors and pico fuses.

Jul 22, 2008 | Akai PT4799HD Rear Projection Television

1 Answer

Convergence


youre convergence ICs need to be replaced there are two of them STK392-040 you can get new replacement ICs and free instructions with pictures at the following link.
http://servicemanuals.vstore.ca/

Jun 05, 2008 | Akai PT4298HD Rear Projection Television

1 Answer

Convergence chip


Should be STK392-040............I use Panasonic brand replacements for durability.....part # C5AA00000107.....
Don't use generic IC's....they will not hold up................T.

Apr 22, 2008 | Akai PT4298HD Rear Projection Television

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