Can anyone help me with diagnosing an electrical problem somewhere in my system?


A couple weeks ago I smelled that odor you associate with electrical fires. After the smell dissipated I turn the power amp on by itself and decided to start there and go upstream. After ten minutes I smelled that odor again so I dropped it off to be fixed and swapped in a spare power amp I have as a backup. Now I smell the same thing and this after playing it for hours without trouble. Does anyone have a routine for identifying the source of such a problem? Thanks in advance for any help you can give.
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Showing 1 response by fred_s

Years ago, I had a McIntosh MC275 amp fail (under warranty) with a loud pop through the left speaker. The system went dead immediately but there was the acrid smell of burnt electronics. The company repaired it without issue and it has worked fine since then. However, for the first year or so, it always produced a slight odor. It finally went away. Apparently a tube shorted and destroyed a few components in the process.

I suppose the same is occurring with your repaired amp. If it is playing normally, I would give the odor a chance to diminish on its own. Of course if the odor is getting strong, I would shut it down and contact the repair facility at once to report the problem.

Hopefully not a problem!

Best, Fred