[Elecraft] K2 CW - relay clicks

[K9SW]

Recently bought a K2 and all was working well (silent QSK) until I moved from one spot on the bench to another.  It was powered up and one of the leads fell off the power supply connector, so this was a live power interruption.  After this, there are relay clicks when sending CW.  I did a reset, but this did not change the relay clicks.  Built the probe and did the CAL FIL routine and got it back on the air successfully.  

S/N 100, with ATU and SSB board.  

It would be nice to get back to silent QSK and preserve relay life.  Any suggestions appreciated!

Dave  K9SW