Question about Akai PT4298HD Rear Projection Television

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Convergence alignment problems with akai ph4298hd

Just replaced the two stk's tv turns on now, but i am unable to to move the convergence up and down. please help

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  • cfsel Dec 16, 2008

    Do I really need the original remote? I have been using my directv remote to move the convergence right and left but I still can not move up or down.

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  • Akai Master
  • 5,138 Answers

After replacing ics did you ck for opened resistors low ohms 1.5ohms etc...You must get print out of How To Enter Service Menu for convergence it will tell you which numbers control which colors to move up and down to complete alinement for convergences. You must have your hand unit the one that came with set It has all the controls you need to be able to enter service menu!I will check to see if i have How to enter service menu.for this set.

Posted on Dec 12, 2008

  • ladywinn
    ladywinn Dec 12, 2008

    Turn set off with hand unit Press mute-1-8-2-power this should let you in convergence if not try set on Press mute-1-8-3 I dont know which numbers control up/down or back/forward try 2-5-for up and down and 4---6 for forward back moves.

  • ladywinn
    ladywinn Dec 16, 2008

    Let me do some cking on what numbers move up and forward and back each symbol on hand unit controls different things.try 2,4,6,8--6&8 should move up and down 4-6 should move back and forward.

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2 Answers

My picture has a red and blue seoaration that looks like an old 3d film


All projection TV sets have two very common problems. One is convergence ( 3D/Warped video or dead set) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

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. In some cases the TV will also not show any video. 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 projection 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 pics of convergence problems.


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Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

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TV set after fluid change

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69189a5.pngSOLUTION

You can get the correct parts, step by step photo instruction guides, and support from www.TvRepairKits.com or click here

Feb 25, 2011 | Sony KP-51WS500 51" Rear Projection...

1 Answer

I have sony tv kp-65wv600. It has problems. color and video is blurry, double vision, letters are curved


You have a convergence failure.

Convergence IC failure is very common. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless

Feb 24, 2011 | Televison & Video

1 Answer

Tv is showing double images, not lining up


Your Convergence ICs have failed. Replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu.


Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option to align the red and blue colors

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless.

Feb 20, 2011 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

My 65 inch sony tv half the screen is having colors like 3 d


Your Convergence ICs have failed. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless.

Feb 20, 2011 | Sony KP-51HW40 51" Rear Projection...

1 Answer

I have the akia projector tv and the numbers and letters are doubled. Also the color isn't right . Is it the auto focus ? . Please help I don't know how to fix this ...


The tv problem is call convergence problems,it dead.Tv have convergence colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts must replaced on the tv convergence board to solved the tv picture convergence problems.Try website like Tvrepairworld.com might still can buy a whole refurbish convergence board for the replacement.The Akai and Samsung DLP tvs used the same convergence board.Or the shop,will cost u like $300-350 for parts and labors.

Jan 06, 2011 | Akai PT5598HD 55" Rear Projection...

1 Answer

Images show double images like shadows


Ur tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts,must be replaced on the tv convergence board to fix the tv convergence board to solved the tv picture convergence problems.Try website like Tvrepairworld.com to buy a whole convergence board for the replacement,might still have it.The DLP tvs AKAI and Samsung tvs used the same convergence board.Or the shop,will cost u like 300-350 for parts and labors.

Dec 17, 2010 | Samsung HCM5525W 55" Rear Projection...

1 Answer

We have 52 inche akai and it shows double inmage


This problems is known as a convergnce problems,it dead.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergnce board,must be replaced to solved the tv covergence board.To solved the tv picture convergence problems.Try website like Tvrepairworld.com to buy a whole rebuild convergence board to replaced.The Akai/Samsung tv used the same convergence board.

Sep 15, 2010 | Akai PT5492S 54" Rear Projection...

1 Answer

Won't stay in focus? keeps getting red out of focus.b


Tv have a problems known as a convergence problems,it dead.Any colors lines R,G,B mis alignment.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts must be replaced to solved the covergence problems.Try website like Tvrepairworld.com to buy a whole refurbish convergence board for the replacement.The Samsung/Akai tvs used the same convergence board.Or the shop will cost u $300-350 for parts and labors.

Aug 19, 2010 | Samsung Televison & Video

2 Answers

Our tv just started having a fuzzy image and the auto focus function aborts during the red color alignment. is there a manual alignment I can do to fix it.


What does this fuzzy image look like? Does it have ghosting shadows. Of course it is possible to align red manually from the convergence menu. But first lets confirm that it is indeed a convergence related problem.

Aug 18, 2010 | Samsung HCL552W 55" Rear Projection...

1 Answer

For my pth5498 the green and red colors are not in alignment. I guess I have a convergence problem. I hit keys mute 1 8 2 and then turned the power back on and then a menu came up. I got out of it and have...


Any colors R,G,B out of alignment the convergence board are dead.The tv convergencce board must have it 2 STK convergencce ICS,and some or all it resistors be replaced to solved the convergence problems.The shop will cost u $300-350 for parts and labors.

Jun 18, 2010 | Akai PTH5498 54" Rear Projection...

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