[R-390] after all these years/ tube checker story, delete if not intetersted

[Scott Bauer]

 After all these years, I have finally found a bad tube that my TV-7
passed.

 I had been running this radio for quite some time, about 4 months.
When I came down into my radio kingdom, this radio was running
but dead quiet. It is tuned up with 4 others to the Global HF System
so I knew automatically there was something wrong. The others were
 receiving traffic. The normal troubleshooting produced nothing. I
decided to check the tubes as stated above, it has been a while. All tubes
tested above specs.

 Swapped the IF module, still dead. Audio module, still dead. I had already
checked the cables from the multi-coupler. The ballast was good, the
OA2 was good, 150 volts.

I should have checked out one specific tube before I swapped out those
modules as after doing it, I remembered having this problem before.
It was V401, but it failed the test on the same tester in the past.
 I swapped it out anyhow and bingo, problem solved. That along
with a few others will make a radio deader than a door nail. I know most 
of you
already know this. I am just passing my learning experience. I am always
thrilled when I am able to solve problems without getting the iron out.

 Scott W#cv