There is a missing trace on the Mini Wave board.
Pin 5 of U6 should be connected to +5V. The nearest connection point is
pin 1 of U6.
We recommend that you add this jumper even though your MW may appear to
be working correctly. There is a tendency for unconnected CMOS inputs to
rise to the positive rail, which allows the circuit to seem to work
properly. In fact, we built quite a few MWs before we noticed any
problems. This is not a reliable situation however.
The effected circuit is the 4070 based AD conversion clock for the two
Wave and Bank pots and CV ins. You will not be able to change these
settings and the LEDs will power up in a random mode if the circuit
fails. We had a previous alert concerning the 4070 and this is the same
problem.
As of today, August 3, 2001, all kits and assembled units shipped will
have the board modified.
I apologize for the inconvenience!
Regards,
___________________
John Blacet
Blacet Research
http://www.blacet.com