savv
Super Member
What do you mean? Open value?Are you measuring millivolts,ohms etc?
Which channel has a class A adjustment issue? Did class B adjust Ok in that same channel? If so. You have a problem with the either
A.micro switches (2 each)
B.Mode slide switch itself.
You have a problem in the switching for Speakers A..Bad switch,dirty switch,cold solder or broken connection. See schematic...
I am measuring in millivolts and the number showing on the DMM is 1 and wont respond to adjustments in VR 603. Class B adjusted ok in both channels. Its the Right Channel that wont adjust in Class A.