[SignalOne] CX7A Driver Board?

[W2AGN]

Well, this thing is driving me nuts. I have had that driver board in and 
out four times. I have replaced Q2, Q3 and Q4. Still no go.

It WAS working, then I had a plate to grid short in the final tube, which 
blew something. I thought it was the driver transistor, but I guess not. 

As I mentioned, an RF probe indicates RF at the grid, but not enough to 
drive the tube. Oddly, since I replaced Q2, if I touch the grid  with the 
RF probe now, I get oscillation. (high plate current) . Same result with 
RF probe on input to driver board. 

Anyway, anyone have a spare CX7A driver board to sell? Thought I would 
check before I pull this one out again. 

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+-++-++-++-++-+   John L. Sielke
|W||2||A||G||N|        http://www.w2agn.net [UPDATED]
+-++-++-++-++-+    Ex-K3HLU,TF2WKT,W7JEF,W4MPC,N4JS