On Sat, 11 Jun 2011 18:20:33 +0100, "Dave Plowman (News)"
wrote:

I've been fixing a Cambridge A60 - turned out to be nothing more than both
speaker fuses blown. But thought I might as well check the quiescent
current while I'm at it. And the method given in the manual is weird -
replace the PS DC fuses with 15 ohm resistors and measure the voltage
across them.

Not having any high watt 15 ohm resistors to hand is there a different way?

Take the fuse out and just put in an ammeter of suitable range. I
think that if it is a modern digital type, its internal resistance
will be low enough. Ohms law will translate volts across 15 ohms into
current.

d