[SignalOne] CX7A Arcing Update

[W2AGN]

First, let me thank all of you who replied. Lots of good info. I have 
stored several messages in my "Saved" box.

I got a replacement tube today. Installed it, and let it "cook" for an 
hour. Viola! NO arcing when I hit the B+. 

Bad news :-(  I have no drive. Someone suggested the arcing might blow 
the driver transistor, and I guess it did. 

Jsut to check, I put the old tube back, and sure enough, it arced, and 
the 1 ohm blew. So it WAS the tube. (It would arc with no drive before). 
Put back new tube, replaced 1 ohm resistor, and all OK again.

Now,

1. Where is a good place to get replacement driver transistors?
2. Any hints on the easiest way to get at the thing. Looks like I have to 
remove the driver board, which means removing the readout board, etc. 
Correct?


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+-++-++-++-++-+   John L. Sielke
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