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no whine before its time....
My '87 535is has a whine in the stereo system. It has both alternator and
ignition noise.
The stereo is quiet just after it is turned on, in about 1 minute the whine
begins. The sound is independent of volume comtrol position, but does seem
to worsen with higher outside temperature. The sound comes and goes somewhat,
perhaps related to other electrical devices being activated.
One local BMW csar said it is a common problem with 'is' stereos and simply
needed a Radio Shack noise filter, The local auto stereo lords say it is a
defective head or amp, and is cheaper to replace than to repair. These
guys have always been honest and competent in the past.
The racket is just too obnoxious to ignore.
Anyone dealt with this?
t.o.