[Elecraft] KPA100 Amplifier Keying

[Bob Evans]

I've just installed the KPA100UPKT to bring #4687 up to date.  Apparently, I
messed up the amp keying circuit somehow.  It now keys and unkeys with each
dot and dash.  Changing the TR time has no effect on the amp keying.  Even
when I set the TR to 1 second, the rig holds in transmit, but the amp unkeys
between elements.  I plug the amp into my other K2/100, and things work
perfectly, so I know it isn't the amp.  I've put an ohm meter on the amp key
line and it shows the keyed line to be performing correctly, i.e. holding
zero ohms until the TR releases.
 
Any ideas?  Have I damaged Q9 so that it won't handle the current/voltage of
my AL-80B anymore, yet it gives good readings on my VOM?
 
Thanks,
Bob Evans, K5WA