68kMLA Classic Interface
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| Click here to select a new forum. | | Classic II no power on CRT? | Posted by: crazyfrog on 2023-04-25 08:42:21
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? | Posted by: bpetersen on 2023-11-08 23:51:17
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. | Posted by: bpetersen on 2023-11-11 17:30:35
Confirmed my QL2 was the problem. Replaced it and it now displays. | | 1 |
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