[Elecraft] Missing 12v for oscillator on XV222

[Rajiv Dewan, N2RD]

  I am having a problem with a recently built XV222.  When I initially 
buit it, it was working and went thru the calibration & testing with 
flying colors.  After initial testing it sat on the shelf for a while.   
I tried to use it for a recent VHF contest.  The symptom:
No 12V on JP9 Pin 1 and so there is no 12V for the oscillator.
There is 12 V on Pin 5 and Pin 3 of JP9.  The 5V regulator U4 also has 
12V input.

Any suggestions?

As an aside, the XV144 that I built is working fine.

Raj

Rajiv Dewan, N2RD