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Continuous Noise from Handclap/Maracas

Posted: Mar 8th, '19, 00:24
by pfaffian
Hi,

I'm having an issue with my handclap section. It's just constant noise. I've replaced most of the transistors and the AN IC on the unit, as well as tried 2 different BA6110s. I need some help debugging it. Has anyone had this issue before?

Thanks

Re: Continuous Noise from Handclap/Maracas

Posted: Mar 8th, '19, 15:34
by pfaffian
Traced the problem by lifting R378. Does Q69 trigger the opening of this part of the circuit?

Re: Continuous Noise from Handclap/Maracas

Posted: Mar 11th, '19, 06:12
by pfaffian
Strangely the Maracas work but the reverb tail on them is extremely long when they're triggered.

Re: Continuous Noise from Handclap/Maracas

Posted: Mar 18th, '19, 05:45
by pfaffian
Replaced all transistors in the voice, and it works now.

Re: Continuous Noise from Handclap/Maracas

Posted: Apr 12th, '20, 21:02
by j.colt
Continuous white noise may be fixed by replacing Q73.