[Elecraft] I Went and Did it Now?

[W2AGN]

I guess I really screwed up. I was getting my K2 (trusty #023) ready for FD. 
I was hooking up my old laptop, to send CW with TR log. Something happenned, 
and I got on the outside of the serial connector. Nor this didn't go to the 
KIO2, but to my interface, with a transistor to ket the K2 in CW. I key 
through the mike jack PTT line, as I use the same interface for T/R 
switchjing on PSK. Always worked fine with the big computer. I had already 
set the key menu for Traight Key, as I used it with the big computer a wekk 
or so ago, no problems.

Anyway, the voltage difference has blown something in the K2. When I turn it 
on, it is stuck on transmit. It appears something on the control board is 
blown.

I have it apart, but not sure where to start. Nothing appears fried. I tried 
tracing the "PTT/DOT" line on the schematic and just got a headache ;-)

Anybody "been there, done that?"


-- 
   _    _    _    _    _
  / \  / \  / \  / \  / \  John L. Sielke w2agn@w2agn.net
 ( W )( 2 )( A )( G )( N ) http://www.w2agn.net
  \_/  \_/  \_/  \_/  \_/  NJ-QRP #57 QRP-L #884 QRP-ARCI ARQrp #86
 EX-N4JS, W4MPC, W7JEF, K3HLU G-QRP #9544  NorCal CQC AKQRP QCWA  FISTS #2781
 SOC, ARLHS, OOTC, Zombie #576  Elecraft K2 #0023 K1 #146, 1151