Prophet 5 Power Supply Question
costello at costello.seanet.com
Tue Oct 8 23:02:46 CEST 1996
I have a question for all of you knowledgeable types out there. I recently
purchased a Sequential Circuits Prophet 5 (rev. 3.3); upon playing it in a
quiet situation (away from the sounds of the music store and band practice),
I noticed it was emitting a hum. The hum comes from the machine itself, and
can be felt as a slight vibration in the music stand. The output seems to
be free of this hum, so it is not a simple ground loop problem (the hum can
be heard without an amplifier).
Is this normal? Any idea what could be causing this hum? I presume it is
something in the power supply, but I don't know what it would be. Is this
something that I should have serviced? Will it cause damage to my Prophet?
Does this sound too much like a letter to Dear Abby?
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