Weird issue: all notes are completely wrong

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fredrikstolpe
 
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Joined: Thu May 14, 2009 10:55 am

Weird issue: all notes are completely wrong

Post by fredrikstolpe »

Hello

I have a really funny issue: mostly it works normal, but sometimes all notes goes in to bananas mode.

It's not detuned, the tune is kept, everything is normal, but the notes on the keyboard are not a regular scale, it's some really weird scale (not a detuned scale, only not a regular CDEFGAH scale).

For example: C note is maybe C note. D note is also C note. E note is maybe G note, F note is also G note, and so on. An octave up is not 12 steps up, it's maybe 5. Two octaves is maybe 7 tone steps up.

Both in keyboard mode and in pattern mode.

Also CV sent, and I think when controlling via MIDI gives the same result.

I can't go out of bananas mode, not by restarting, not by changing patterns etc.

And then, dunno why, it goes out of that mode and everything is back to normal.

Anyone heard of anything similar?

Must be a software issue imo.

I will try to re-flash and see.

Later
Fredrik

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antto
 
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Re: Weird issue: all notes are completely wrong

Post by antto »

i wouldn't think it's a software issue
i'd look around the resistor network on the DAC (located near the VCO section)

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fredrikstolpe
 
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Re: Weird issue: all notes are completely wrong

Post by fredrikstolpe »

Aah, yeah that would perhaps make sense.

I will take a look, thanks

Fredrik

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mmm
 
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Re: Weird issue: all notes are completely wrong

Post by mmm »

Check the CV output; this will probably also be all over the map.

I would suspect IC9 here.

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