[SignalOne] Arcing in Final

[Mac]

my flip comments were made in fun.. not to offend..  thanx  mac/mc
----- Original Message -----
From: "W2AGN" <w2agn@w2agn.net>
To: <signalone@mailman.qth.net>
Sent: Thursday, October 31, 2002 12:19 PM
Subject: [SignalOne] Arcing in Final


> OK, this is driving me nuts! About 4 months ago I became the proud owner
> of a lovingly restored CX7A. It looks like new. First time I turned it
> on...ka-pow, the 1 ohm resistor blew. Talking to the gentleman I bought
> it from, it seems he had a simalr problem, and made some suggestions.
>
> I found the "collar" on the tube loose, and the setscrew I though might
> have been arcing. I tightened it up, and looked over the inside of the PA
> with a magnifying glass. I could see no signs of arcing, so replaced the
> 1 ohm resistor.
>
> All was fine, until after a month or so of no use, I fired it up the
> other day. Ka-pow again. Sure enough, resistor was blown. This time I
> replaced the ,005 3KV bypass. Turned it on, all seemed fine for about 5
> minutes..then ka-pow again. Blew another 1 ohm resistor.
>
> I can't see where it is arcing. I have a sinking feeling it might be the
> tube arcing internally.
>
> Anyone had similar experience steer me where to look next? Also,
> suggestions as to where to purchase an 8072 for the final, at the best
> price.
>
> ---
> +-++-++-++-++-+   John L. Sielke
> |W||2||A||G||N|        http://www.w2agn.net
> +-++-++-++-++-+    Ex-K3HLU,TF2WKT,W7JEF,W4MPC,N4JS
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