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Old 8th October 2003, 01:27 AM   #1
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Join Date: Oct 2002
Location: Youngsotwn, OH
Default a little intermittent thump...

I've got a Scott 209 integrated amp. It's stock, as far as I can tell, except for the NOS tubes I put in, all of which should be fine. It sounds sweet-- quiet, euphonious, not the greatest high end, but hey, whaddya expect from a 45-year old stock amp!

The problem is minor but noticeable-- every 30 seconds or so it emits a subtle thump of a mid-bass pitch-- kind of like a very quiet bass drum being hit with a fuzzy mallet. It's quieter, it seems, than any of the volume peaks in the music, but quite easy to hear.

Any idea what could be going on? As I said, the parts are stock, so any number of elements could be degraded by now. I've had dreams of getting a second one of these and doing a thorough parts-replacement, at least of the caps, wires, other potentially cruddy stuff, etc.


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Old 8th October 2003, 08:33 PM   #2
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Location: Belgium

Sounds like a PS capacitor dieing to me.

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Old 8th October 2003, 11:57 PM   #3
dhaen is offline dhaen  Europe
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Location: U.K.

Another possibility is discharge through dust. You might try cleaning using a paint-brush and vacuum cleaner.

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