Works Upsidedown!
Glen Zook
gzook at YAHOO.COM
Fri Nov 23 11:57:34 EST 2007
Is this the proper time for an "I told you so"?
:>)
Glen, K9STH
--- "Alan W. Fremmer" <AWFremmer at AOL.COM> wrote:
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.
Glen, K9STH
Website: http://k9sth.com
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