[Johnson] JV II Signs of life (death?)
Rich Soennichsen
rsoennichsen at gmail.com
Sun May 28 10:50:02 EDT 2006
After cleaning and recapping a brought up my JV II slowly on a variac.
(I have zero experience wit hthis rig) All was well on the low
voltage side. I followed the setup instructions for 40m and all
seemed normal, until I threw the plate voltage switch. A pleasant hum
for about 15 seconds. Then a Not-So-Pleasant hum and puff of smoke
from somewhere, I threw the switch and all was quiet.
After screwing up my courage I threw the switch and this time watched
the tube side, no smoke this time but after a few seconds the same
terrible noise and the VR9 (5R4) and one of the 6146 (V7) tubes were
putting on a light show of purple light. Of course I only let this go
on for a second or two.
I hope this rings some bells.
73
Rich
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