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derfla
Joined: 11 Mar 2006
Posts: 547
Location: eastern ohio
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| Posted: Sat Apr 02, 2011 3:08 pm Post subject: marquee 8500 focus issue help! |
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It's been at least two years with no issues from the electrohome but today i find that the right hand side of the image is out of focus. starts on the left nice and crisp and gets worse to the right. swapped out the focus card with a spare no luck. pulled the deflection and reseated it. can anyone point me in the right direction?
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Sat Apr 02, 2011 3:12 pm Post subject: |
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Hello
Focus is managed by waveforms originating in the control board, and what looks like poor focus can also be zone stig, so go into the service menu and see if those adjustments are working. Also, clean all socketed chips and their sockets with appropriate solvent, and the connectors along the rear of the control board.
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derfla
Joined: 11 Mar 2006
Posts: 547
Location: eastern ohio
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| Posted: Sat Apr 02, 2011 4:56 pm Post subject: |
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Thanks tim that did the trick. now for another few years with no problems.
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