If the the sounds are like a falling bomb coming through the speakers, then
it is likely to be failing capacitors on the main board. This is a known
issue with the baby Macs.
Terry (Tez)
On Thu, Nov 1, 2012 at 7:56 PM, David Griffith <dgriffi at cs.csubak.edu>wrote:
On Thu, 1 Nov 2012, Chris Pye wrote:
On 01/11/2012, at 3:24 PM, David Griffith
<dgriffi at cs.csubak.edu> wrote:
I have a well-treated Macintosh SE/30 that I'd like to fix up.
Problem 1) Whenever the CPU is doing something or something is being
read or written, faint warbling screeches can be heard coming from inside.
The volume control does nothing to quell this noise.
Just a guess, but the last few SE30's I've come across have all had at
least a few dried out capacitors causing problems.. This could be the
reason for problem 1.
When I played with this Mac last year, the noise problem wasn't present.
Now that it has been running for a couple hours, the screeching is gone. I
suppose a recapping of the power supply and monitor would be a good idea
anyhow.
--
David Griffith
dgriffi at
cs.csubak.edu
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