Is your ADA MT-100 (Microtube 100) only workin in one channel? Try this

[Harley Hexxe]

There are 2 ways to measure the current, masure the voltage over the white 0.1 ohm power resistor, ballpark is 40 to 50 mV (milli volts!!!) or take the fuse out and put an ampmeter bewteen the fuse lugs and there you should get between 40-50mA.

This is useful.

I'm also thinking since I'm going to have the amp open and replacing the power transistors, maybe I should also replace caps at the same time?

[rnolan]

I'm also thinking since I'm going to have the amp open and replacing the power transistors, maybe I should also replace caps at the same time? 

Hey Harley, sounds prudent, the caps are old