Mailist to discuss all issues regarding the Digitech GSP-2101 Guitar FX Processor

After many good years in service, my 2101 has died.  My tech found a  
problem with the 5
volts supply and fixed that but that seems to be just the beginning.   
Is there a repair manual
anywhere out there?  Schematics, diagrams?  Thanks in advance for any  
help.

Send it back to Digitech.  They'll repair it for $85.  Send them an 
email.