Swapping the power supply from a IIfx into a II for testing — #5

Post #5 by beachycove

Source Forum	68kMLA
Category	Hardware
Post Date	Sat, 28 Nov 2009 - 18:16
Original URL	https://68kmla.org/bb/threads/swapping-the-power-supply-from-a-iifx-into-a-ii-for-testing.19145/

Post

I have a Macintosh II that appears to be a problem with the power supply. I really want to get the Macintosh II working again and have seen a power supply for sale. But I don't want to spend the money if it won't solve the problem.

I also own a Macintosh IIfx that works great. I thought I could swap the power supplies to see if it is defiantly a power supply problem, but I don't want to damage

the IIfx's power supply or the Macintosh II any further. I know that the power supplies are slightly different, but the output looks the same.

Does anybody know if this is safe or will it work?

Thanks in advance.

My understanding is that the II -> IIfx upgrade did not include a new ps. Check in the service manual for II upgrades (which I am sure you know how to find) just to be sure that you have seen it with your own eyes, but I'm pretty sure that's how it was.