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

Member for

10 years 3 months
Profile picture for user RD112

RD112 Sat, 03/28/2020 - 15:46

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.