[Amps] bring up an HT 41

[Don Nesbitt]

Hi Steve.  I'm sure you will get the usual "variac,
etc, etc." replies and maybe even a "replace the 866's
with solid state and then check the charge current to
each capacitor in the the cap bank, making sure it
does not exceed "ya'da ya'da ya'da" as you bring up
the voltage with the ubiquitous variac" but, in my
humble opinion, why bother trying to save the caps? -
by now, they are old enough, dry enough and likely
leaky enough to be ready for replacement!  If he is
really interested in "using" the amp, I'd just replace
the capacitor bank before cranking up and forget about
it!  YMMV Have fun es 73  --don n4hh

--- scm <scm at carrollsweb.com> wrote:

> Hi everybody,
> 
> A friend is wanting to put an HT 41 back in service
> after many years of sitting. As best as I can find
> out on
> the internet it has a pair of 866 rectifier tubes
> and 6 electrolytic filter caps.
> 
> I'm thinking he needs full line voltage to run the
> 866s but less plate v to try and save the caps. I
> was
> thinking that he could run the hv primary from a
> variac for a while and the rest of the amp from
> normal line
> v. Anyone have any ideas?
> 
> thanks in advance
> 
> 73,
> Steve  wd0ct
> 
> 
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> 



		
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