Need advice in Audio Research Classic C-60Amp

No biggie. I found many videos and write ups explaining safe ways to do it. It’s not too complicated. 

So I purchased the correct probes to set the bias, the kind that extend out from a long insulated sleeve and can lock into the small capacitor legs. 

I had AR email me the instructions. 

One thing I’d like some input on is there appears to be only one adjustment screw for both the right and left side tubes. So how does adjusting for one side not upset the other and vice versa when adjusting for bias. 

Ok. I finished the mini refresh.

I biased the tubes and changed out the main caps. One side was 4 mVDC lower, not really out of spec. But I figured I could do better, I flip flopped a tube set from the left side to the right side. This got me 65mVDC on the right and 63mVDC on the left, then I turned my attention to the servo adjustment. I had to adjust one channel a quarter turn and that was it. Then I switched out the 4 large caps. That was simple, just discharge them, pull them out and reconnect the new 4. Then over the course of two hours I slowly brought the voltage up to operating spec. Once that was done I threw a record on and enjoyed the music!

Everybody says how dangerous this bias stuff is on this unit. I agree if your a total nimrod and don’t do a bit of reading and pay attention to basic safety. Not to toot my own horn too much, but I‘ve never done any of this stuff before today. I just made sure I had the right tools, took some simple safety precautions and researched a bit. Saved my $’s and too. I am lucky, the unit was basically in great shape to begin with, so I have that going for me!

Good job! Now enjoy the fruits of your labor.