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Crash Voice Issue - Triggers on Every Beat

Posted: Mar 29th, '17, 03:20
by AbeLovesSynths
Hello,

I built a 1.01 Nava and it's working fairly well, just three issues to sort. This one is for the Crash, which sounds fine when triggered in tap mode, but when the sequencer is running will play on every beat.
I assume that the issue is actually in the sequencer, where there must be a link between the master pulse and the Crash trigger out, but here is a picture of the Crash Section. Is it possible to get schematics of the Sequencer section for 1.01?
https://imgur.com/a/AbjNd
(for some reason images are showing up as broken icons...)

Re: Crash Voice Issue - Triggers on Every Beat

Posted: Mar 29th, '17, 16:17
by metronome
Here's a schematic for an older version of the board. But hopefully it will help.

http://www.e-licktronic.com/en/index.ph ... achment=48

It helped me pin down a bad trace in the sequencer section.

Re: Crash Voice Issue - Triggers on Every Beat

Posted: Apr 1st, '17, 02:03
by AbeLovesSynths
I used the 1.0l schematics and did some continuity testing.
I was hoping to find an extra, erroneous trace between Crash cap C50 and an Trigger output other than IC112 Pin 7 but there wasn't any connection.
I traced the signal coming in on C50 and it went everywhere it said it should in the Crash schematic, and nowhere it didn't seem it shouldn't.
I reinitialized and it still triggers on every step. I had my headphones in when initializing the EEPROM and got a weird mix of tone and noise in the main outs during the process - is that normal?
Anyone have any clues why it's triggering on every step?