68kMLA Classic Interface
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| Click here to select a new forum. | | Macintosh IIx on ATX PSU | Posted by: bibilit on 2016-01-20 00:15:44
I have a Macintosh IIx to test but no PSU, found the pinout, anyone already have converted a II PSU to ATX ?
| Posted by: trag on 2016-01-20 05:12:58
It's pretty straight forward, except, the boot signal is inverted. Just match the wires like to like, except on the turn on signal wire, you'll need to run that through an inverter chip and supply the inverter from the 5 V Standby line. There are some articles for other Mac models over at xlr8yourmac.com.
| Posted by: Macdrone on 2016-01-22 06:26:30
If you get a chance I still have not been able to find the bad trace on my IIx that allows soft boot.
Make sure both batteries are new and at proper voltage, make sure board has been cleaned, make sure all caps replaced. I can "jump" mine to boot and shut down but wont start without jumping the power supply or battery trick.
Off and on are 2 seperate circuts. I would guess so the battery is only on one side so as not to drain it.
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