These things have o-rings to replace? I didn't know!
I just ordered a fistful of silicone o-rings from 'The O-Ring Store' for the attenuators in my 8648C sig gens, plus a bunch extras for future use.
?
I also have an 8494B with manual knob, should I look into servicing it too? (It is an N-type like yours).
?
?
Jared
Jared Cabot