ls1i+@andrew.cmu.edu (Leonard John Schultz) (12/16/89)
-I just purchase an SE/30 with 40MB hard drive and I love it. It's sleek -and fast... - -Anyway, everything was working fine until I started it up under -MultiFinder. Suddenly, I could hear a very high-pitched, barely audible -whine coming from the Mac. Upon doing some testing, the whine stops -when I hold down the Mouse button (such as a selection box in Finder) or -bring up any dialog box or DA (ie Chooser). - -This noise does not occur when MultiFinder is not running (ie just using -Finder). - -I am using a fairly standard system (nothing to wierd software wise). -Also, I installed an extra 1 Megabyte RAM using 4 256K SIMMS giving me 2 -Meg total. - -Why is it doing this?!?!?!? - -Any comments/suggestions are welcome. - -Thanks, -ross - -rc3h@andrew.cmu.edu I experenced the same problem you have. I just got a new SE/30 and I installed 4 one-meg simms. I then noticed a high-pitched wine when the computer wasn't doing anything, and especially when a screensaver is on, multifinder or not, one meg or five. It gets higher and louder when I hold the mouse button in on the desktop and makes a thumping noise when I drag something. The sound goes away when the computer is doing something. The noise seems to be louder with 5 megs than with 1. I took the machine to the computer store, and Apple Tech Support said that it was problably the 40 meg harddrive and that it was normal for it to make some noise. But when I listen to other SE/30's with the 40 meg harddrive, I don't hear the noise. Does anyone know what could be causing this irritating noise?? Len Schultz
kaufman@Neon.Stanford.EDU (Marc T. Kaufman) (12/17/89)
In article <wZWMeYS00UhB81p1Zq@andrew.cmu.edu> ls1i+@andrew.cmu.edu (Leonard John Schultz) writes:
.I experenced the same problem you have. I just got a new SE/30 and I
.installed 4 one-meg simms. I then noticed a high-pitched wine when the
.computer wasn't doing anything, and especially when a screensaver is on,
.multifinder or not, one meg or five. It gets higher and louder when I
.hold the mouse button in on the desktop and makes a thumping noise when
.I drag something. ^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^
Maybe your desktop is lumpy. Try some fine sandpaper.
(sorry. Merry Xmas)
Marc Kaufman (kaufman@Neon.stanford.edu)pwp@shamash.cdc.com ( HOUFAC) (12/19/89)
In article <wZWMeYS00UhB81p1Zq@andrew.cmu.edu> ls1i+@andrew.cmu.edu (Leonard John Schultz) writes: >I experenced the same problem you have. I just got a new SE/30 and I >installed 4 one-meg simms. I then noticed a high-pitched wine when the >computer wasn't doing anything, and especially when a screensaver is on, >multifinder or not, one meg or five. It gets higher and louder when I >hold the mouse button in on the desktop and makes a thumping noise when >I drag something. I've seen workstations (not Mac) where the power supply generated strange noises when I drag a window around. It never made much sense to me, but I was told "they all do that". --Pete Poorman pwp@shamash.cdc.com
CJENKINSR@mail.cut.oz (Richard Jenkins) (12/19/89)
I've seen this before... > I experenced the same problem you have. I just got a new SE/30 and I > installed 4 one-meg simms. I then noticed a high-pitched wine when the > computer wasn't doing anything, and especially when a screensaver is on, > multifinder or not, one meg or five. It gets higher and louder when I > hold the mouse button in on the desktop and makes a thumping noise when > I drag something. The sound goes away when the computer is doing > something. The noise seems to be louder with 5 megs than with 1. > > I took the machine to the computer store, and Apple Tech Support said > that it was problably the 40 meg harddrive and that it was normal for it > to make some noise. But when I listen to other SE/30's with the 40 meg > harddrive, I don't hear the noise. > > Does anyone know what could be causing this irritating noise?? > > Len Schultz -- I experienced this on a customer's SE/30 2Mb HD40. Brand new, straight out of the box and onto the bench for a 4Mb upgrade. When I checked the machine after the upgrade, I noticed the noise you describe, but this one was silent during I/O, disk access and when processing, and when there was any input from the ADB Bus. The technician was not impressed when I asked him to fix it, so I did it myself. Sundry adjustments to the analogue board made no difference, so I swapped the power supply for a known good one. No difference, so I swapped the Analogue board, and lo and behold, a silent Macintosh (comparatively). What exactly caused the problem I do not know, but a new analogue board fixed it, and that is the level any dealer would be expected to go to. Apple did not knock back the warranty claim, so either we were lucky or they know about it.. Cheers _______________________________________________________________________________ Richard Jenkins Tel: (09) 351 7864 AppleLink:AUST0176 PC Support Group Fax: (09) 351 2673 ACSnet:cjenkinsr@mail.cut.oz Curtin University Perth, Western Australia psi%050529452300030::cjenkinsr