[Elecraft] K3 AF/SUB front panel knobs

[JamesAC0E]

I have experienced virtually  no problems with my factory built K3-100 
s/n 56xx purchased from Bob, K6XX, in August of 2011 at the ARRL Rocky 
Mountain Division Convention in Taos, NM

Just this week my AF/Sub volume controls have become intermittent from 
nothing to full volume  without or without being touched; regardless of 
setting. Upon closer inspection mechanically  the AF knob feels like its 
become loose inside the housing or a solder joint where the assembly is 
fastened to the pcb.

I spent a good share of my working (?) life in telecom,two-way radio, 
and IT. I have had added filters and upgraded boards in this rig in the 
past but now am looking for a way forward as to whether or not dig in if 
a replacement part is available from ( trouble ticket already sent) or 
to take the audio from the back of the rig to a mixer board and just go 
down the road..

73

Jim, AC0E