[Elecraft] This is weird. K3

[Paul VanOveren]

All of a sudden my K3 # 758 is acting weird.   It recognizes the ATU in that 
the little ATU is present on the display, but no signals are received in the 
radio, only a hiss.  If  I try to adjust the power setting  it will read 
from 0.10mw and - 10.0 db  to  1.5 mw and 1.8 db on the display, it stays 
there for only a second or two and then the display return s to normal.

Altho the atu is showing on the display and I tap the tune button, the 
display changes to NO ATU and the normal clicking sounds is not there.

When I hold the XMT button to perform the Tune function, the display changes 
to 1.8 db and 1.5 mw rather than the swr and power, it does change to the cw 
mode however.
This all happened after I unhooked the rs232 cable from the back of the K3 
so I could plug in my Yamaha CM-500 headset, which I removed for a day. Just 
for grins I went to the K3 Utility and did the resore K3 configuration 
button. Presto, signals back, power control normal, ATU clicking again, Tune 
fuction reading swr and power...I am so glad, but can anyone tell me why 
removing the cable from the laptop to the K3 evidently corrupted something?

Sincerly,
NF8J
Paul VanOveren
5911 Snow Ave.
Alto, Mi
616-868-7149