[Elecraft] XV50 Troubleshooting -- Need help

[Brian F. Wruble]

Hi all:

I am just doing the alignment for a recently completed XV50, to be used with
my K2.  I am on the step that says: "Key the 28MHz rig to provide transmit
RF to the transverter and advance R22 until you get a reading between 0.1
and 2 volts at TP5."  I found 0 volts here, and adjusting R22 had no effect.


That's my first problem.  

While checking voltages found in Appendix B, I accidentally shorted pins 1
and 2 of of U4.  Until that happened, I had the correct voltages.  After
that, I had only about 0.5v between 1 and 2 and about 1 v between 2 and 3.

What have I blown, do you think?  And any suggestions on the original
problem also greatly appreciated.

Thanks in advance.  73 de Brian W3BW