[R-390] Go figure

[Masters Andy]

Good afternoon group. For the past day and a half I
have been chasing down a problem in my R-390A. I made
a mod to the AGC circuit to get AGC action more to my
liking in the CW mode (Mine has the Lanksford AGC
mod).  I also relaced a few old caps on the IF deck
while in there.  

Put it back together and started listening. 
Everything was lovely for about 2 minutes and then all
signals disappeared.  Hauled out the service monitor,
counter, scope, voltmeter, etc and began scratching...
 

A few minutes ago I decided to do something simple. I
began with a visual inspection of everything with the
receiver on and as I came to the oscillator deck, I
noticed the 6AK5 was cold and had no filament light. 
So I pulled the tube, checked for filament voltage
(which was present) and then replaced the tube. 
Presto-all works great again.  

Just because their is no correlation between work done
and radio failures apparently doesn't mean that every
once in a while something will happen concurrently
just to teach you to keep your hands out of it if it
is working!

Regards, Dutch Masters

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com