[Elecraft] KAT2/K2 weird fault

[Ian Liston-Smith]

 I have a K2 s/n 7469 with 160m and 60m boards. No PA fitted. The K2 has been working fine on all bands Rx/Tx until I fitted the KAT2 ATU. I now have no TX on 60, 40, 30 and no RX on 60 and 40. I have removed the KAT2 and the faults remain.

Any suggestions? Has the CPU got screwed up and a factory reset needed? Advice please before I do that.

Many thanks,

Ian, G4JQT