[Milsurplus] BC-348-R SNAFU

[arc5 at ix.netcom.com]

Quick and dirty from my cell and without a diagram handy:  
Remove 24 V from fil line.
  Hook to B+ line through a pilot lamp... say, half an amp worth. 
 Wait 10-20 mins while 
watching for signs.  
Feel around for something hot.
 Yes- really and no; I've never fried a transformer.  I've fixed several this way.

------Original Message------
From: Laura and Jim <mcenfalz at humboldt1.com>
To: <milsurplus at mailman.qth.net>,"Laura and Jim" <mcenfalz at humboldt1.com>
Date: Thursday, February 14, 2013 1:53:42 PM GMT-8
Subject: [Milsurplus] BC-348-R SNAFU

I repaired the BFO in my rig (new bypass cap and associated resistor), and now it won't even let smoke out! 

While running, the dyno output lugs down to 90V. I pulled the dyno and it appears to be fine when used on another rig (~240V, caps check OK). 

Measuring across B+ and B- leads w/dyno still removed I get 370 ohms in all three switch positions AVC-OFF-MVC (varies by ~0.1 ohm). 

I'm thinking a bypass cap doing this (B+, short to chassis, then from chassis to B- via the output stage audio transformer). Getting the same value in the OFF position suggests this to me. 

Any ideas?

73 DE JIM K6FWT
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