Works Upsidedown!

[Alan W. Fremmer]

Fellow Collectors/Restorers,
 
Hope everyone had a great Thanksgiving.  Thought I'd share a  restoration 
story that happily ended on a positive note.
 
Was working on a Johnson Adventurer, bought on eBay, which was found to  have 
one of two electrolytic capacitors a dead short.  Replaced both and  found I 
could load the PA to 90 ma with nice power out.  Within a minute or  so the 
power started dropping off and I noticed the filaments on the 807 were  dimming. 
 Tried wiggling the tube in it's socket with limited success,  spraying the 
contacts with cleaner, the whole nine yards with no  improvement.  
 
Turned the rig over to check solder joints and everything looked  good.  
Turned the transmitter on and all filaments glowed perfectly and the  transmitter 
was working once again.  Right side up - no glow on the  807.  
 
I bet by now most of you know where the fault lay.  After hours of  futile 
searching I found the  screw, washer, nut and spade lug of the  ground return 
was loose.  A quick tightening and I was in business.  I  should have listened 
to the experts on this site, like Glen among others, who  pointed out that this 
was one pf the first things to be done.
 
Thanks to all on the Boatanchors List who have helped me learn.  A  great 
weekend to all.
 
73, Alan - KB2HEI



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