Article View: comp.sys.mac
Article #43243Re: Mac Plus Motherboard from Hell
From: Harold Wong
Date: Tue, 30 May 1989 17:06
Date: Tue, 30 May 1989 17:06
37 lines
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2326 bytes
In article <14233@pasteur.Berkeley.EDU> terence@cory.Berkeley.EDU (Terence Chang) writes: > >Mac error code 0300FF (a RAM test failure) which was no surprise, >because the usual pattern of diagonal stripes that follows a cold >start was glitched. Badly. Columns of extra pixels in the middle >of the screen and columns of missing pixels on the right side. > stuff deleted > > Then I put the Mac on its side and spanked its bottom. And >voila! Up and running without a single misplaced pixel. First >there was the cold start and the warm start, and now the Han Solo >start. Does anybody know what's really wrong with my Mac? > Easy, I had a semi/simular situation. I has just upgraded the memory in my SE and it turned out that the SIMM boards were a little too thick. When I stuffed the memory into the SIMM Sockets, I broke two of the pins and the Mac started up with memory error and the missing stripes. I would guess some of the pins on your SIMM socket lost connection with the SIMM and when you hit it, made contact. This is a warning to all Mac users. If you are upgrading Mac memory, watch out for SIMM boards which are too thick. If it takes effort to stuff them in, then it's too thick. Serious damage can result on your mother board. Also watch out for SIMM boards which are too thin. If they slosh around after you install them, they are too thin (also, you will not be able to start up the Mac), you might have the same problem as terence did. ------------------------------------------------------------------------------- Harold Wong (213) 825-9040 UCLA-Mathnet; 3915F MSA; 405 Hilgard Ave.; Los Angeles, CA 90024-1555 ARPA: hgw@math.ucla.edu BITNET: hgw%math.ucla.edu@INTERBIT
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!purdue!bu-cs!bloom-beacon!usc!ucla-cs!math.ucla.edu!julia!hgwReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!purdue!bu-cs!bloom-beacon!usc!ucla-cs!math.ucla.edu!julia!hgw From: hgw@julia.math.ucla.edu (Harold Wong) Newsgroups: comp.sys.mac Subject: Re: Mac Plus Motherboard from Hell Keywords: sierra, papa, alpha, november, kilo Message-ID: <1108@sunset.MATH.UCLA.EDU> Date: 30 May 89 17:06:37 GMT References: <14233@pasteur.Berkeley.EDU> Sender: news@MATH.UCLA.EDU Reply-To: hgw@math.ucla.edu (Harold Wong) Distribution: usa Organization: UCLA Mathematics Department Lines: 37