KPA500 ALC problem (was K3 intermittent low power output)
The problem with my K3 is actually a Voltage sitting on the ALC output
of the KPA500 all the time (circa 9 Volts), even with just the mains
turned on via the rear panel switch. As a "work around" I've turned
off external ALC with the K3 menu and it behaves itself.
No idea why there should be a steady DC Voltage on the ALC, it clearly
upsets the K3 (symptom - flashing CMP/ALC on K3 when on transmit). The
Voltage is present on the ALC phono socket without the aux cable
connected and also present on pin 15 of the aux cable.