[AH] Drumulator problem: Mix Out on all outputs ... anyone see this before?

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From Kenny Balys
Sent Wed, Sep 4th 2019, 21:03

Hi AH,

My drumulator is putting out the Mix Out on all outputs.

There is also a paper shredding crackle that comes occationally.

I suspect the TLO84 opamp on the final output but I cannot see how the
"Mix Out" is bleeding back to all the outputs.

The last stage before the Mix Out amp is a resistance summing mixer.

Any tips most are most appreciated.