[Elecraft] K2 troubles

[wsm at amaonline.com]

Hello
I had to replace diodes d16 and d17 on my K2 100 watt amp.
When putting it back together I was distracted, and reversed
the leads on P6 aux rf and P3 aux 12 volt leads.
I've been told that bad things happen when you do that. So the
rig will not power up with the amp installed. but with  it 
unstalled the K2 seems to work ok. What do you suppose I 
destroyed? I'm going to refrain from ever opening the case
on any radio.
Thanks
Scott N5SM