Spark while voltage testing

Krishk · 2716

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Offline Paul Birkeland

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Reply #30 on: October 24, 2019, 02:06:49 PM
A bit of a buzz could indicate that one of the 220uF caps isn't all the way soldered.  You can wiggle each one and see if the leads move through the terminal strips.

A little bit of buzz with the volume control turned all the way up and nothing plugged into the inputs is also completely normal and not indicative of anything amiss.

Paul "PB" Birkeland

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Offline Krishk

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Reply #31 on: October 24, 2019, 04:38:33 PM
What's weird is that I hear the buzz with my zmf headphones but not with other sennheiser ones, could this be a cable issue?


Offline Paul Birkeland

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Reply #32 on: October 24, 2019, 05:21:57 PM
I would start by looking at those 220uF filter caps and being sure that you hear the noise with the volume pot turned all the way down.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

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