Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!killer!pollux!ti-csl!mips!holland From: holland@mips.csc.ti.com (Fred Hollander) Newsgroups: comp.sys.mac Subject: Re: RS Mac II fan upgrade caution Message-ID: <52096@ti-csl.CSNET> Date: 21 Jun 88 20:30:52 GMT References: <12549@apple.Apple.COM> Sender: news@ti-csl.CSNET Reply-To: holland@mips.UUCP (Fred Hollander) Organization: TI Computer Science Center, Dallas Lines: 49 In article <12549@apple.Apple.COM> wrs@apple.com (Walter Smith) writes: > >But I wanted to warn people about the following situation: two of >three Macs I looked at had Sony power supplies that had nothing to do >with the instructions posted here, which apparently deal with Astec >power supplies. > So that's the deal. I just did mine last night. It was difficult to verify all of the components described in the instructions. I did verify that the same fan is used. >The Sony supplies are slightly harder to deal with than the Astecs >because they have a little PC board mounted above the fan. You have >to untwist a metal tab and slice through some silicone cement holding >the board to the fan, then take the board out. Also, it's a bit >difficult to get the fans in and out, due to a tight squeeze between >the fan and some capacitors. > I couldn't believe the instructions said, "It is possible to remove the fan without removing any components". I did exactly as you describe. I didn't think it was too bad. I thought I was getting away easy not having to disconnect and keep track of any more wires. >However, it's not all bad. The fan is held in with long screws that >go all the way through to little brackets on the other side, so you >don't have to deal with the press-in nuts. > >Anyone with some experience playing with the insides of equipment like >this will have no trouble figuring it all out. But the posted >step-by-step instructions are mostly useless--the case doesn't even >open the same way--so if you were relying on them, check the name on >your power supply before proceeding. > There are two screws at in the back of the power supply on the side opposite the mounting screws for the fan. Then the cover pries off from the side where the screws were. There are clips on the opposite side and guides halfway down. You need to pay attention to the guides when putting the cover back on. >- Walt >-- >Walter Smith Apple Computer wrs@apple.com > Special Projects (408) 973-4015 >Disclaimer: >Anyone who thinks I might be representing Apple Computer, Inc. in any >official capacity on Usenet, of all places, has a serious attitude problem. Fred Hollander Computer Science Center Texas Instruments, Inc. holland%ti-csl@csnet-rela