[Boatanchors] Blowing fuse on Valiant, update

[mikea]

On Mon, Dec 31, 2007 at 04:32:44PM -0500, Joe Roth wrote:
> 
>    It  all  tests  fine  with out the rectifier tube, V21. Tube begins to
>    glow for 10 seconds and then pops the fuse.
>    I  don't know how to "test" the tube without another so I think I best
>    check the tube socket voltages and see what turns up.
>    Joe
>    ---------[ Received Mail Content ]----------
>    Subject : Re: [Boatanchors] Blowing fuse on Valiant
>    Date : Mon, 31 Dec 2007 15:22:23 -0600
>    From : "K0DAN"
>    To : "Joe Roth" ,
>    Check rectifier tube. May short after warmup.
>    GL es 73
>    Dan
>    K0DAN

It may be the tube, or it may be something downstream. It's good to 
know that T2 probably is OK. I finally got a schematic, and think that
after you look at voltages, if you haven't got anything jumping out at
you, it would be good to look at C93A and B, the R22/R23 voltage 
divider, and maybe have someone else come over and look at the critter
with you to find wiring errors. I've looked right past wiring errors 
when I worked on my own gear, more times than I care to think about. 

I really hope you get this rig going, not only to relieve your evident
and justified frustration, but also because it's a wonderful piece of 
gear. 

-- 
Mike Andrews, W5EGO
mikea at mikea.ath.cx
Tired old sysadmin