How to clean a IIfx power supply — #10

Post #10 by Unknown_K

Source Forum	68kMLA
Category	Hardware
Post Date	Tue, 29 Sep 2009 - 23:14
Original URL	https://68kmla.org/bb/threads/how-to-clean-a-iifx-power-supply.18679/

Post

The Mac II and IIx used one version of the PSU; the "real" IIfx used a revised version (with variable speed fans?). Part numbers are:661-0375 Power Supply Mac II, IIx 120watt

661-0542 Power Supply Mac IIfx

In practice the PSUs are interchangeable. Does anyone have a parts list for the II/IIx --> IIfx upgrade kit?

http://www.macheaven.net/MH_Manuals/macintosh_ii.pdf

That PDF just lists the motherboard and sticker. It also mentions that a mac II with 1.4MB superdrive upgrade will look like an 800K drive to an OS before 6.0.2 which I didnt know. Shows where the chip for the floppy is and how to remove it.