[Hallicrafters] Hot SX-101A chassis

[Ronald Oberloh]

I would expect an equalizing  cap across the AC line along  with the
caps to ground might keep the voltage off the chassis. I expect one
could remove them without a whole lot of adverse effects. What were
there main reason or job?  Stop RF from going out or  RF from coming
in?  If they are in a transmitter that might be a good thing but in a
receiver unless one is in a very strong RF field of a broadcast
transmitter or another HAM station  it is a probably don't care.   Also
unless these caps short to ground is there really a safety issue.
Sounds more like a scare issue.   Also have the caps turned into high
value resistors or just doing their thing of charging ?

Ron  WA0KDS




Glen Zook wrote:

> Not necessarily!
>
> Most of the older receivers that used the bypass
> capacitors to ground from the AC line have around 50
> to 60 volts on the chassis.
>
> That is why a good ground is a must.  Or, do like I do
> on any rig that I service (unless the owner insists
> otherwise), install a 3-wire line cord.  That will
> take care of the "problem".
>
> Glen, K9STH
>
> --- Dave Moorman <dmoorman4 at attbi.com> wrote:
> > I've discovered that my SX-101A chassis is hot to
> > ground - about 50 VAC.
> > This is a little excessive.  It looks like the
> > likely suspects would be the
> > ceramic bypass caps, C91 and C92, or leaky
> > transformer primary, or the
> > oscillator heater.
> >
> > Has anyone else run across this problem?
>
> =====
> Glen, K9STH
>
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