Thanks JDW for reply:
To simply my request for answer re focus problem, I didn't state full story.
My SE 30 motherboard failed in May, and I purchased a used replacement from "Nextstep Recycle" in Eugene Or. This worked till recently, so I had two defective motherboards. I bought two sets of tant cap replacements and paid professional tech to replace both motherboards. (He charged me an amazing low price of $20 (Cdn.)/board). I've also been using a different computer technician for many years, probably the only guy in Victoria BC who will touch an old computer. He pulled boards and replaced. Both worked fine except for focus. When I asked him how often he'd done this kind of work, he said it was probably over 1K times. Though nobody is infallible, it's not too likely that he caused problem. As both motherboards had same focus problem, it would seem problem is not on motherboard itself, UNLESS TANT CAPS THEMSELVES CHANGED SOMETHING - but then other people would have had same problem. I was delighted that Trag had seemed to answer problem (though his response was re a Mac plus), and was looking for confirmation. Now fix is not so certain. Any other comments by anyone?
Trag told me value of fixed resistor (1 M ohm), but does anyone know value of variable (focus) resistor?
However since focus was fine beforehand, logic (dictates?) that problem is not with either resistor.
Input appreciated.
Gary
To simply my request for answer re focus problem, I didn't state full story.
My SE 30 motherboard failed in May, and I purchased a used replacement from "Nextstep Recycle" in Eugene Or. This worked till recently, so I had two defective motherboards. I bought two sets of tant cap replacements and paid professional tech to replace both motherboards. (He charged me an amazing low price of $20 (Cdn.)/board). I've also been using a different computer technician for many years, probably the only guy in Victoria BC who will touch an old computer. He pulled boards and replaced. Both worked fine except for focus. When I asked him how often he'd done this kind of work, he said it was probably over 1K times. Though nobody is infallible, it's not too likely that he caused problem. As both motherboards had same focus problem, it would seem problem is not on motherboard itself, UNLESS TANT CAPS THEMSELVES CHANGED SOMETHING - but then other people would have had same problem. I was delighted that Trag had seemed to answer problem (though his response was re a Mac plus), and was looking for confirmation. Now fix is not so certain. Any other comments by anyone?
Trag told me value of fixed resistor (1 M ohm), but does anyone know value of variable (focus) resistor?
However since focus was fine beforehand, logic (dictates?) that problem is not with either resistor.
Input appreciated.
Gary