[Elecraft] K2 troubleshooting (was: K2 AGC)

[Michael Carter]

Hi Iran,

I changed the subject line to reflect that this
thread is continuing as a general troubleshooting
exercise with your K2.

The NE602 product detector has a balanced
output circuit and unless you use a differential
scope probe (or do the CH1 - CH2 trick with
your single-ended probes) you will mainly
see bleed-through of the BFO on either output
pin.

Your subsequent post indicated that you
ran the BFO test and it passed?

What do you hear at the audio output,
either speaker or phones?  Can you
hear the tone from your signal generator
as it's down-converted and amplified?

73,
Mike, K8CN