Fw: [Hallicrafters] SX-42 Hum(bug)

[Ed Benjamin]

----- Original Message -----
From: "Ed Benjamin" <EDBEN at prodigy.net>
To: "Mike Smout" <mikesmout at sympatico.ca>
Sent: Monday, July 29, 2002 9:19 AM
Subject: Re: [Hallicrafters] SX-42 Hum(bug)


> FIRST, Mike, do you have the schematic, either the Hallicrafter's Manual
or
> Sams?
>
> There were differences in the wiring used at the factory on the SX-42's.
> When I had two sets on hand they were different.  One fit the Sams and the
> other fit the Hallicrafter's schematic!
>
> Take a look at the 6H6's.  The later units used only half of one of those
> two 6H6's.  If your unit is like that, Sams fits.
>
> If you don't have the manual or schematic, let me know and I'll make a
copy
> for you.  You should have a copy of Hallicrafter's version.  If you have a
> "half-used" 6H6, you should also have Sam's.
>
> Now that that's taken care of, I assume you've got a properly impedance
> matched output to your speaker (You probably wouldn't even hear that hum
> without it!).
>
> Apparently you are hearing no clicks from any of your control switches.
> Better be sure your audio section is working first.  How is your high
> voltage?  Is your voltage regulator tube glowing violet?  If not, the
power
> supply has to be your first check.
>
> Wish I were closer.  It would be fun to give you some first hand help!
>
>                 Ed Benjamin
>
>
> ----- Original Message -----
> From: "Mike Smout" <mikesmout at sympatico.ca>
> To: <hallicrafters at mailman.qth.net>
> Sent: Monday, July 29, 2002 9:53 AM
> Subject: [Hallicrafters] SX-42 Hum(bug)
>
>
>