Message
Re: SDS6 issue
2014-11-09 by philmurr@...
You can check the 311, D-A converter and the VIA by altering the tempo pots and seeing if the readout changes.
Sounds like there might be a problem somewhere between the sync select switch on the expansion board and where that tells the CPU you want to use the internal clock - have a look at IC6 and see if that's doing what it should...