Early Apple II (Silver) power supplies and load for testing

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Early Apple II (Silver) power supplies and load for testing

So I am restoring an Rev-0 Apple II supply for someone. I was told it wasn't working and It was missing the power connector, so I replaced that. I opened it up (it already had screws, I know older supplies were riveted). Visually everything looked good, nothing leaking or bulging. I checked the fuse.

OK basics done before I dig into real troubleshooting.

So I figured I'd plug it in to test. However I know these early silver supplies need a load resistor or a bulb. The later ones you can simply plug in and check the voltages at the cable. I obviously don't want to risk an Apple II+ board if the supply is bad, but it's been a while since I repaired my own Rev-0 supply that I don't recall if all the voltages need a load, just the +5 or both the +5 and +12. Before I rig something up, I figured I'd ask. and trust me it will be rigged up, I don't have any spare PCB side connectors (I think I will order a few for the future and make a real tester).

So which voltages on these older supplies need a load resistor for me to test?

Thanks,
Corey

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Don't know if it is optimum,

Don't know if it is optimum, but I use a 20 ohm 10W resistor on the +5V and a 50 ohm 10W resistor on the +12V and everything seems to be honkydory.   I'm sure putting a small load on the - voltages would make things more precise but I've never done that.

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