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| Apple II psu potentiometer |
Posted by: Anonymous on 2024-09-16 06:53:09
Hello,
I was cleaning a burst RIFA in my Apple II psu and I happened to spin this potentiometer. Just curious what its purpose is and if I made a mistake that can be fixed. Thanks! |
Posted by: shirsch on 2024-09-16 12:31:03
That's a voltage adjustment, probably for the +5V line. Don't connect it to a motherboard until properly (re)set! The power supply needs to be checked with loads on the outputs. Maybe someone has a link to a tutorial? |
Posted by: Anonymous on 2024-09-16 13:01:24
Ah shoot, thanks for that. Yeah, I’m not sure how to test that, so I would appreciate some help😖 |
Posted by: bibilit on 2024-09-17 00:22:32
hook an old hard drive to the Apple II PSU and reset voltages |
Posted by: Anonymous on 2024-09-17 06:23:14
How would I do that? The hard drive I have in mind is an old sata drive with a 4 pin molex input for power |
Posted by: bibilit on 2024-09-17 10:31:43
Any hard drive will only need 5 and 12 volts, so wiring it from the Apple II PSU should not be hard. |
Posted by: Anonymous on 2024-09-17 10:39:18
Great, and once I do that would I need a multimeter or oscillator to reset the voltages? Or at least view them. |
Posted by: bibilit on 2024-09-17 10:44:11
Multimeter |
Posted by: Anonymous on 2024-09-22 18:51:38
I’ve tested the rails as per Adrian’s instructions () and they all are within the correct ranges |
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