[Elecraft] K2 I/O Module Help Needed

[Mark Adams, PE]

Hi Gang,

On FD, my K2 I/O board went south. It just stopped working when contest time arrived Saturday. Bummer. I've just dug into the radio and found that I have no power to U1 or Q1 on the I/O board and that L1 on the Aux2 Board is busted. Has a hole in its side to be exact. So, my junk box has no 15uH inductors hiding anywhere. I have some inductors but no way to measure them.

Anyone have any ideas? Is there a resistor I could sub to finish troubleshooting? Maybe a few turns of #18 tinned wire would do the trick? I cannot even find formulas to help me out. 

Yes, I'll order a few from the big E Monday, but until then......

73,
Mark K2QO