Question about Akai PT4298HD Rear Projection Television

1 Answer

Faint diagonal lines in t.v.

I have an Akai pt4298hd that I aquired a short time ago that a 3 year old sprayed cleaning fluid on. It burned a hole in the red crt board. I replaced all the boards as a unit and the t.v. is up and running. The picture and colors are sharp, however, there are faint diagonal lines that will come and go in what seems to be a clockwise pattern. They seem to cycle about every 1-2 minutes. I do not believe the problem lies in the crt board adjustments because anything I do, including going to just black and white, there is no change. I thought it might be some sort of reception problem, but no change through a dvd player, different cables, etc. Everything looks great except for these annoying lines. Does this sound like a bad component? Any help is appreciated.

Posted by Stephen Johnson on

  • Stephen Johnson Nov 29, 2006

    I had a shop look at it and it is definitely mot a convergence issue. I am getting some sort of interference or frequency problem. It duplicated the problem identically at the shop, but they could not locate the problem. I don't know how much time he actually spent to evaluate the problem but it was a free checkout and he said he couldn't locate it. I could take it to another shop, but I don't want to get into diagnosis fees if I don't have to. Any input will be appreciated.

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  • 317 Answers

Try turning down screen controls. turn up until you see the lines and then back off until they dissappear...easy as that! john

Posted on Sep 12, 2007

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Make sure you get the CG Board Part number:
BP94-00155A
There are other boards in this set that say convergence, but, they are not the boards you want.
Available at:
Andrewselectronics.com
Easy to replace.
Any questions, reply to this post and I will respond.
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