[Hallicrafters] HT-37 SSB

[Al Parker]

hi Jack,
	Bob's right, if the power supply hasn't been "solid stated" yet, it 
should be done, properly.  Beside just replacing the rectifier tubes 
with SS devices, the 5 v filament windings must be disconnected so they 
don't have HV on them.  The usual mode of failure is for the 5v windings 
to short either to the core (ground), or to the adjacent winding.  It's 
an easy job, if it hasn't been done you should do it.  Take a look at 
one of my webpages <http://www.boatanchors.org/HT37.htm>
to see just what's done.
	I'm glad you found your SB generator problem, that's a tough area to 
troubleshoot.
73,

Al, W8UT
www.boatanchors.org
www.hammarlund.info

"There is nothing -- absolutely nothing -- half so much
worth doing as simply messing about in boats"
Ratty, to Mole

On 12/14/2011 11:45 AM, rbethman wrote:
> Jack,
>
> A word of advice on the HT-37.
>
> Watch the power transformer.  The HT-32 and the HT-37 are infamously
> prone to failure.
>
> I would also consider replacing the Bias pot.  It can cause untold grief
> if it should fail.
>
> Look for ALL the old brown square caps, and most of the disk capacitors.
>    By now they are very old and tenuous at best!
>
> Work the old girl carefully!  She's a keeper!
>
> Bob - N0DGN