[Elecraft] K2 broken after KPA100 mod

[Steve Kallal]

I am about done with part 1 of the assembly of the KPA100 option. I opened
the K2 and removed pin 4 from P4 on the control board per the instructions.
Rather than connect the partially assembled KPA100 to the K2, I powered up
the K2 first. Now the K2 doesn't initialize.
 
Here are the symptoms:
 
1. I power up the K2. There is no visual indication the unit is powered up.
 
2. I turn the K2 off and power it on again. This time the LCD display shows
ELECrAFt and stops there. There are LEDs lit on the S meter.
 
I've double checked and am sure I cut the right pin. It is the header that
connects to the KIO2 unit I think. The control board has been reseated and
number of times to be sure.
 
I didn't build the K2 and bought it used recently. So I don't know my way
around the rig. I was hoping to finish the KPA100 option this weekend, but
now I need to get the K2 working again.
 
73,
 
Steve N6VL