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- Newsgroups: comp.sys.mac.hardware
- Path: sparky!uunet!gatech!rpi!batcomputer!munnari.oz.au!uniwa!cujo!ken
- From: ken@cujo.curtin.edu.au (Ken Taylor)
- Subject: Re: MacSE screen wavers during disk access
- Message-ID: <1992Jul30.011142.28843@cujo.curtin.edu.au>
- Organization: Curtin University of Technology
- X-Newsreader: Tin 1.1 PL4
- References: <TRsmoB1w164w@banana.ithaca.ny.us>
- Date: Thu, 30 Jul 1992 01:11:42 GMT
- Lines: 30
-
- ner@banana.ithaca.ny.us (Steven Lee) writes:
- : gt4586c@prism.gatech.EDU (WILLETT,THOMAS CARTER) writes:
- :
- : > I have been having some trouble with my SE screen occassionally having mild
- : > fits of waviness in the display. I recently put in a new, bigger hard drive
- : > and now it appears that the waviness occurrs more often and correlates with
- : > disk accesses. Is this a bad power supply problem as was recently discusses
- : > with regard to the MacPlus? Or is it something else? thanks.
- : > - tom willett drwho@lab12.gatech.edu
- :
- : Does your new hard disk have FCC approval sticker on it? It seems
- : to me that you have an interference problem there....
-
- This is unlikely to be RF interference (which is what the FCC approval is for)
- but more likely magnetic interference from the stepper (or voice coil) on the
- disk.. CRTs are very easily deflected with even small magnetic forces...
-
- Is your SE one of the ones with both floppy drives still installed ?
-
- I installed a Quantum drive in an SE which gave this problem, and found that
- turning the drive around (so that the cables went over the top of the drive
- and into the other side) placed the stepper far enough away to get rid of
- the problem..
-
- Ken
- --
- Ken Taylor | "I have a friend who's seen inside my tiny brain
- ken@cujo.curtin.edu.au | He's seen the aging and the mildew from the rain
- Curtin University | And he does what he can to keep on top of every
- Perth, W. Australia | one of them" - Happy Rhodes
-