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

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AKAI 54 there are double images with red and pale yellow and green, there are drop down lines in gereen which makes a half loop from the top and bottom lines draw up

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

Posted on Jul 27, 2008

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I have red and green shadow on top and bottom of the screen.


Ur Convergence board is dead or deffective with the IC chip.

Aug 17, 2009 | Akai PTH5498 54" Rear Projection...

1 Answer

Distorted picture


You have a convergence problem.On this model you can change the convergence amp board which has the convergence IC's on it making it an easy repair.

Oct 06, 2007 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Samsung HCN4727W Rear Projection TV, green screen, audio works


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,Akai2_bing.gif,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...

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

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

Jul 10, 2009 | Samsung HL-R4667W Rear Projection...

1 Answer

Red and green wavy lines


If the distortion that you see can be described as somewhat of a 3-D picture, the problem is teh convergence circuit and this can be fixed easily. Also, if you can solder, you can fix this yourself. If you wish to do this, please update this and I'll provide you with some instructions.

Dan

Sep 12, 2008 | Akai PT5492S 54" Rear Projection...

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

Double image


yes you just need two ICs

Jul 12, 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

Double images red and blue lines on left and right side of screen


You need to replace both convergence ICs thy are STK392-040 you can get replacement ICs at the following Link and they will provide free instalation Instructions with pictures so you can do the repair yourself. heres the link.
http://servicemanuals.vstore.ca/

Jun 15, 2008 | Akai PTH5498 54" Rear Projection...

1 Answer

Double- Vision


More than likely your akai has defective stk392-040 Convergence chips . it also may have open resistors generally 3.9 ohm flame proff. this board is attached to the top left looking from the back of the set it is screwed on by 1 screw black in the center . after installation this will probably half to be converged dinamically. which means you will half to get to the grid this is done by using the remote press mute 183 quicly to enter numbers on thew remote 2 to adjust red 4 to adjust blue horizonta 6 to adjustred vertical and 8 to adjust red vertical using center button to go up and down

Feb 20, 2008 | Akai PT4298HD Rear Projection Television

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