[Elecraft] KAT2

[Trevor Day]

Hi All,
Just completed the KAT2 and have come up against a small problem.  The 
unit appears to be permanently 'stuck' in the antenna 2 configuration 
although everything else appears to work perfectly (it loads a random 
wire on all bands 160 - 10m).
The front panel indicates Ant1 or Ant2 when the button is pressed but 
nothing changes;  there is no 'click' from relay K18 either.  At this 
stage I don't know whether the problem is the relay or the switching 
voltage from the pic.  Pin 26 (RC7) appears to be at earth potential ie 
shorted when checked wrt chassis.  Visual checks appear correct

Is there a way of operating these relays whilst in cct but with power 
off eg by applying a battery derived 5v ?  I would like to confirm that 
the relay is the problem if possible.

Failing that, any other ideas?

Thanks,
Trev G3ZYY #2637
-- 
Trevor Day