[Hallicrafters] sx101a CORRECTIONS

[k0ewu at juno.com]

CORRECTIONS HERE *
On Mon, 21 Nov 2005 09:13:58 -0600 k0ewu at juno.com writes:
> HI- there is an extra filament tx (T10) for the local oscillator, it 
> is
> fused on the primary. The fuse(1/4 a)* is hidden in a length of 
> sleeving
> making it hard to find,
> this fuse also feeds  3.3k 10 watt resistor (R69) mounted next to a
> sheild by the local oscillator.
> It's purpose is to  keep the osc circuits warm to minimize warm up 
> drift.
> These components are on all of the time that the set is plugged in- 
> not
> switched.
> If perchance the fuse has blown you will not have voltage to the osc
TUBE HEATER* 
> >AND heater RESISTOR*. (SOMETMES CALLED A DAMP CHASER)*
> Sometimes the fuse just opens from old age.
> old jack  SORRI ABOUT OMISSIONS.
> 
> 
> On Fri, 18 Nov 2005 06:29:02 -0600 "Ross Stenberg" 
> <k9cox at charter.net>
> writes:
> > There is a heater element (resistor) used to supply constant 
> > filament
> > voltage to the LO that can open up over time and the receiver will 
> 
> > appear as
> > you describe. It is easy to overlook one tube not lighting up when 
> 
> > all the
> > others do.
> > 
> >         73 Ross K9COX
> > 
> > 
> > >>>Strange question from someone who has a degree in electronics 
> but 
> > here
> > goes. My sx101a worked fine on the vintage net this past Sun. but 
> 
> > the next
> > time I turned it on there was nothing. No sound & no s meter 
> > movement.
> > 
> > All tubes seem to lite up. Changed both audio output tubes but 
> > still
> > nothing. Thought I'd ask before I take it out of its bottom 
> cover.
> > 
> > Thanks Jack
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>