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Problems with focus on red EM 8500LC

 
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Per 489



Joined: 09 Jun 2007
Posts: 31
Location: Aaland. Finland

Posted: Tue Oct 09, 2007 1:57 pm    Post subject: Problems with focus on red EM 8500LC

Hi

I have problems geting the red tube focus on both sides of screen. I can get it on the sides but then it´s not focused in center. Green and blue is ok.
I have trayed mooving the focus coil and I can have focus egither in center or sides.. If I then adjust with electronic focus I can shift between center or side focus but they are never focused at the same time.

If I go to service menu and adjust focus on red there it hardly happens anything on sides even if I go from 0 -100. Just blury.

Needs some help

Per
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Curt Palme
CRT Tech


Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC

TV/Projector: All of them!

Posted: Tue Oct 09, 2007 2:19 pm    Post subject:

Try swapping the R and G focus leads. Chances are the focus board is bad. See if the green then does that. I've got spares..
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Per 489



Joined: 09 Jun 2007
Posts: 31
Location: Aaland. Finland

Posted: Wed Oct 10, 2007 1:05 pm    Post subject:

Swaped red and green and the problem went over to green.

I´m getting a new board from the guy i bought it from (Jari in Gothenburg).
Thank you for a quick reply.
Best regards Per
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