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Author Topic: Amiga 3000D psu: Is the -5V REALLY necessary???  (Read 1469 times)

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Offline mingleTopic starter

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Amiga 3000D psu: Is the -5V REALLY necessary???
« on: April 15, 2010, 06:16:45 AM »
Hi,

I'm looking at replacing the dead PSU in my newly arrived A3000D with a Micro ATX unit, but it seems that the original A3000 supply has a -5V line and not many later ATX supplies have -5V (it was deleted from the spec after ATX v1.1).

Looking at all the info (pretty much zilch!) seems to suggest that the -5V is only needed for certain old ISA cards, so I'm thinking that it's not really needed for 99.99% of Amiga 3000s...

So, can anyone confirm this? Does anyone have full A3000D schematics they could look at and see if indeed the -5V only goes to the ISA slots?

It'd make finding a replacement supply so much easier!

Cheers,

Mike.