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

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Black line at the top of tv

I have a AKAI 54" projection tv model # PTH5498 there is a black line at the top of the screen the repair man said that he needs the service code to add. how do I get this code? Thank you.

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  • miket2 Jan 16, 2008

    Same problem. Black line at top of TV. When I go into MUTE 183, is the adjustment user-friendly/obvious or what should I do to get rid of the line?

  • Anonymous Feb 24, 2008

    Anyone know the exact settting adjustments to make at the service menu to correct the 2" gap at the top of the screen? I replaced the convergence board and the picture is good except for the gap. I know how to access the service menu but cant tell what to adjust. Thank you!



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MUTE 1 8 2
MUTE 1 8 3

Look for vertical adjustment
Be careful, no factory reset if you screw up
Write down old value before adjusting

Posted on Dec 20, 2007


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2 Answers

Convergence board is bad

This is a common problem. Its called a convergence failure.

Problem #1) Convergence


  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted

You can see some examples and find a fix here...

Dec 28, 2009 | Akai PTH5498 54" Rear Projection...

1 Answer

Akai (PTH5498) 54" rear projection TV with red and green ghosting and large curve in the picture at the top and bottom of the screen. Unable to fix using manual convergence. Thinking it must be the...


Yes is is your convergence IC's. One has gone bad, but consider replacing both of them because if one has gone bad then the other is not far behind. They are located on the middle board of your set. They are mounted on a large heatsink, the part # should be STK-392-040. Replace these and your set will work fine again.

Nov 15, 2009 | Akai PTH5498 54" Rear Projection...

1 Answer

54" Projection TV

Your green gun in our tv is misagligned/out of focus. Your tv uses red, green and blue guns that layer in different shades and mix to create the different colors. Your green is a little off so the colors aren't mixing right which explains the green haze and the shadows. A tv repair man can fix this problem pretty easily and it isnt expenisve.

Aug 28, 2008 | Akai PT4298HD Rear Projection Television

1 Answer

Convergence board

hello. well i see you need help.? ok . then let's start with the first thing the black at the top & the bottom. .!!! that most likly a ajustment that i can walk you through. !!! with live chat,!!! the other problem's we will deal with as we go working togther on your set .!!! on line chat .!!! so you have to ask for me and a on line chat. !!! and we will go from there .ok i will be waiting for your responce ok "GOOD LUCK"

Jul 31, 2008 | Akai PTH5498 54" Rear Projection...

1 Answer

Red & green lines

Sounds like you have hardware failure in the convergence circuit. Some combination of the IC's, fuses, and/or resistors has failed. Repair cost is $250-$400 parts & labor

Dec 02, 2007 | Akai PTH5498 54" Rear Projection...

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