31 Oct
2012
31 Oct
'12
11:33 p.m.
On 10/31/2012 10:24 PM, David Griffith 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.
Problem 2) The image on the monitor is canted a few degrees clockwise --
enough to be noticable and irritating.
Problem 3) I've figured out how to format a Mac floppy under Linux and
transfer files by floppy, but I'm unclear how I should get two needed
utilities: binhex and unstuff onto a Mac floppy without mangling the
resource and data forks.
Please help.
Problem 1 /could/ be inductors or capacitors in the switching power
supply.
Problem 2 is easy. The deflection coils/yoke on the neck of the CRT
has been rotated. This is common if roughly handled. Loosen the
fastener and rotate the yoke a few degrees counter-clockwise...
Re-tighten the fastener.
Normal warnings about electrocuting yourself apply. Make sure the
monitor is unplugged and to discharge the high voltage.
Bob.