"Mark D. Zacharias" bravely wrote to "All" (11 Feb 05 06:00:35)
--- on the heady topic of " Set idling current on a Luxman L510"

MDZ From: "Mark D. Zacharias"
MDZ Xref: aeinews sci.electronics.repair:10200

MDZ Of course the correct way is to use the method in the service manual.
MDZ Lacking that, the remaining good channel is often a usable guide -
MDZ adjust the bias for about the same voltage across the emitter
MDZ resistors. Usually about 5 to 15 millivolts across each emitter
MDZ resistor. My old Luxman L430 had you remove a jumper or 2 and actually
MDZ measure the idle current, but measuring across those resistors implies
MDZ the same thing, and doesn't load the circuit. (Most any DMM on a
MDZ low-current range will have a certain resistance value which can kind
MDZ of screw up the very measurements you're trying to make)


Sometimes the inductance of the lead cables can even cause oscillation
in the emitter.

A*s*i*m*o*v

.... A stereo system is the altar to the god of music.