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Old 08-09-2017, 07:48 PM
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Zenith6S321 Zenith6S321 is offline
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Join Date: Aug 2010
Location: Charleston, West Virginia
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Quote:
Originally Posted by Electronic M View Post
If face focus is good, look into optical focus. There may be mechanical adjustments for it.
I agree, that with good focus on the CRT, the poor focus on the screen must be due to a miss-alignment in the optical path.

I have not worked on your projection TV model, but I have adjusted Barco projectors that have a Scheimpflug lens mount that allows you to adjust left-right and top-bottom optical focus. If you can tilt either the CRT face, the projection screen, or possibly the lens plane you may be able to correct the problem. See if you can find any mechanical adjustments that will let you tilt one optical element with respect to the others. I suggest you try to get good focus at the center of the image and then tilt the CRT, lens, or projection screen to adjust left-right and then top-bottom focus.

Dave
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