Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!cs.utexas.edu!ut-emx!ccwf.cc.utexas.edu From: clouds@ccwf.cc.utexas.edu (Kathy Strong) Newsgroups: comp.sys.mac.hardware Subject: Re: Adding 1MB to an old Macintosh+ Summary: The dealer was right (!) Keywords: RAM,Mac+ Message-ID: <42927@ut-emx.uucp> Date: 22 Jan 91 17:35:31 GMT References: Sender: news@ut-emx.uucp Reply-To: clouds@ccwf.cc.utexas.edu (Kathy Strong) Distribution: comp Lines: 42 In article hess@rzsun3.informatik.uni-hamburg.de (Hauke Hess) writes: > >I own a Macintosh+ and would like to expand its RAM to 2 MB. Several people told >me different things about the complexity of this task. Some told me of 'only >plugging in a SIMM 1MBx9, 70ns in the right place', others that I 'should pull >out the old RAM, have to buy 2MB of SIMMS and plug them in instead of the >old RAM', and then there was the cloudy hint 'to remove some resistors and then >plug in a SIMM at the right place'. The second answer was from my local Apple >distributor. > >Which one is right? How easy is the job? Could anyone tell me of 'typical' >problems in expanding a Mac's RAM? The dealer was correct. You must buy TWO 1MB SIMMs (100ns or faster). You will remove two of the existing 256K SIMMs (the two that are behind the other two, if I recall correctly) and replace them with the 1MBs. You will try to find someone to buy the 256ers, and fail. :-) Look for the resistor--it's fairly close to the left bank of SIMMs, I think (can you tell it's been a while since I did this?)... anyway, it's labeled something like "256K only." Clip it off and you're done. If you've never opened up your Mac before, I suggest finding someone who has to show you how to do it. In particular, don't forget: - the power cable is keyed (i.e., there's a tab you have to hold before it will come out of the socket) - the speaker connector can't be undone until the motherboard is partially pulled out - oh yeah... remove your programmer's switch before you take the case apart! Or you could just pay your dealer to do it for you. If he's nice he'll let you watch and then you can do it yourself when you add the other 2 megs. -- ........................................................................... : Kathy Strong : "Try our Hubble-Rita: just one shot, : : (Clouds moving slowly) : and everything's blurry" : : clouds@ccwf.cc.utexas.edu : --El Arroyo : :..........................................................................: