the little old lady that owns it collects EVERYTHING, the walls are lined with random chairs and other furniture nearly to the ceiling. I found the mac 512k and SE in a small room in the very back of the shop, and made her a deal that I would work on her damaged electrical devices in exchange for anything apple or commodore related that she had there or might come across in the future.
I noticed upon closer examination of my SE/30's analog board that CR3 is a much larger diode than in the SE, perhaps they discovered it wasn't quite hefty enough in the long run?
EDIT: I think Q2 may have been the culprit, upon removing it form the circuit my multimeter readings no longer show a dead short across CR2, and when applying voltage to the drive pins for the flyback driver CR3 no longer gets really hot. looks like an N channel fast switching power transistor so I'm guessing it should be normally OFF if there's no clock on the horizontal drive, seeing as its biased to ground. At any rate the collector pin on the transistor broke off flush to the package when trying to remove it so it's getting replaced either way.
I have some 2sc4161 power switching transistors readily available, I may try using one of them and see if it holds. It seems to have about the same characteristics, but a tad beefier on the voltage and current ratings.
EDIT2: Ok, even though I'm weary of using 2sc4161 because of its lower thermal collector dissipation rating, the transistor is in the circuit. I noticed that the spot behind the transistor seemed to have gotten very hot in the past as there was a blackened area there, and the little plastic spacer that keeps the collector plate from grounding to the shield was melted... (that has failed protection diode written all over it) at any rate I plugged in the psu to the board and flipped the switch (last time i did this it would overload fault and not work) . And... we have power, it would seem. So i slapped some really good thermal compound between the transistor and the ground shield. I will first test CR3 to see if it was damaged as well before putting everything together for a final test, seeing as it appears to choke out the return EMF things could end badly if it's shot.
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