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Classic II no power on CRT?

crazyfrog

Active member
Can anyone help I'm trying to get my macintosh classic II going again.
I've previously tried to get this going with new caps and mosfets but got a thin horizontal line then a blown fuse, varistor, diode, power regulators and eventually found a shorted DC3 on the neck board and dead QC1 transistor.
After replacing all those I powered the mac and got a bong but no CRT power and can see with a thermal camera that QL2 isnt powering.

I'm thinking about replacing QL2, TEA2037 and smaller transistors as a last ditch effort. Any recommendations?
 

bpetersen

Active member
Did you ever figure this out? I have a new thread with the same problem and am narrowing in on QL2 as one potential problem.
 
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