In article ,
tony sayer wrote:
I'm using one to drive a pair of subs in the living room. It's never
been touched. Over 40 years old. ;-) No hum from it - although it's
quite possible it is out of spec in one way or another.


Sounds like an ideal candidate for an upgrade. Not only do you put new
caps in they have higher capacity the 2200 mfd goes to 4700 in the
series output, and now its 9400 mfd in the power supply but even the
small caps on the boards its worthwhile to change them too!...

If it ever goes wrong I'd consider that upgrade. But at the moment it does
its job adequately.

--
*Why do overlook and oversee mean opposite things?

Dave Plowman London SW
To e-mail, change noise into sound.