[Elecraft] K3 A couple of buttons do not work

[lothar at erding-mail.de]

K3 #1300, newest utility, Firmware 4.61
After playing with different functions I suddenly got problem(s):
The following buttons don't react, e.g.
BAND (up works - down not) and QSK
MODE (up works - down not) and TEST
SPOT (and PITCH)
ANT
RATE (and LOCK)
NR (NB works)
perhaps more problems??

Firmwareupdate - no change
Main functions (transmit and receive seem to be OK)
Any idea before I have to do a RESET?
Lothar, DJ8EW