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Discussion Starter #1
At present, in order to focus on the surface of the CRT,

my electronic focus controls are all at their maximum adjustment.

I was wondering if there was any way of readjusting so the

controls are in the mid-range of adjustment when focused in

order to allow adjustment either way for a better focus?
 

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Discussion Starter #4
My projector is an old Seleco SVT150, an analogue unit.

I'm not sure how much better the adjustment will get the

picture, so I'm not sure I want to go pulling resistors and

soldering on new ones. How difficult is it to do this?
 

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A piece of cake if you have a high megohm DVM that can measure accurately the resistors in the focus section. Having a schematic would also help, or just draw out the focus portion to figure out which resistor has drifted, how to modify the circuit to improve the focus range.


Curt
 
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