Question about Akai PT4298HD Rear Projection Television

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Vertical line on rear projection TV - Akai PT4298HD

Per the intructions of an online FixYa expert, I did check the mirror and lens covers to see if there was anything on either of them causing the line. Neither one had any dirt on them. However, as I look down inside the green projector, I can see the line/dot inside there. I can only see it when looking down the green tube, but neither the red or blue. What is this telling me? Is there anything I can do, or is this going to require a TV technician? I do not want to spend a fortune on this, but at the same time the picture on this TV is too good to give up on getting rid of this line.

Posted by gofastrack on

  • 1 more comment 
  • gofastrack Oct 30, 2008

    So what causes this, and why would it have happened after I replaced the convergence board? Or did it likely occur at the same time as when the convergence board went out? Am I looking at a big expense to fix something like this?

  • gofastrack Oct 30, 2008

    What causes this to happen, and why would it have occurred at the same time as the convergence board going out? It seems strange that they both happened at once. How costly of a proposition is it to replace a CRT on a rear projection TV? Would I be better off to put the dollars towards a new television?

  • gofastrack Oct 30, 2008

    This is the link to the original thread I posted posting my problem. Pictures are included.



1 Answer

Willie Howell

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This is an indication of a burnt crt. unfortunatly to fix this the crt will need to be replaced. such a repair is something i would recomend to a non tech. theres adjustment issues

Posted on Oct 30, 2008

  • Willie Howell Oct 30, 2008

    i just revewed your pictures and this is a burn in. and you said this line is in the green tube when you look in it and not the other two. What cause this? since it is vertical line,., horizontal failure, what caused horizontal failure may be the big question. convergence falure some sort of power surge, To replace green crt. my shop charge the last person 381 dollars thats 192 for the part the rest tax and labor. of course this all depends on the shop. These sets are known to have what is called Glycol leaks fluid from the tube leaks down on boards.. messy stuff. so we ussally add a bag that catchs the fluid



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