[Elecraft] K2 Anomaly

[Don Wilhelm]

A switch from VFO A to VFO B is unrelated to any pot sitting at a
switchpoint.
You should be looking for some other cause of this 'flakiness' - something
is causing the microprocessor to execute a routine that it should not - it
could be coming from a glitch on the pushbutton matrix, a bad solder joint
at the switch that is just now showing up, or even RF getting into the K2 -
these are just a few things immeditaely off the top of my head.

You might try loosening the microprocessor a bit and reseating it.  It is
possible for slight corrosion to develop at the socket to IC pin pressure
connection, and the wiping action created by re-seating the socketed chips
can often make the problem disappear - it certainly will not hurt anything
to re-seat the uP.

73,
Don W3FPR

> -----Original Message-----
>
> I now have the rig jumping from VFO A to VFO B, in addition to phantom
> displays of power level (the latter more likely to happen shortly after
> stopping spinning the VFO).
>
> These do _not_ necessarily happen during transmit, or during transition
> from transmit to receive or vice versa, so unlikely to be RFI.
>
> The VFO A to VFO B switch happened twice this morning - both
> times during period of receive & with no operator interaction
> with the rig.
>
> 73, VR2BrettGraham
>