2100 65 cold heat sync on driver board. What to Do?
         Superchet
      
      My 2100/65 top lights up , output valves seem okay. All fuses are fine but the driver board heat syncs are cold. There is a blue thumb wheel that can be turned, not sure if the previous owners have touched this. How can i measure voltages to  check if voltages are correct?
Rock on!!!!!
Full Name
              Rob Flindall
          Music Man Equipment
              112RD-100 with EVM speaker, built 1981
          
         
Look under the Tab at the top
Look under the Tab at the top of the website call Donwloads an Resources. The open or download the Service Manual, and your schematic. There is a description of how to bias the output tubes.