[Hallicrafters] SX-42 Hum(bug)

[Barry Hauser]

Hi Mike:

Good luck with your SX-42 venture.

Just in case you haven't seen it yet, there's an excellent piece on an
SX-42 restoration on Phil's Old Radios site.  Lot's of photos and
hard-won experience, plus an interchange between Phil Nelson and A. B.
Bonds.

The URL is http://antiqueradio.org/halli07.htm

BTW - has anyone heard from A. B. Bonds lately?  I hesitate to ask, as he
used to be fairly active on several of the reflectors.

Barry


On Mon, 29 Jul 2002 06:53:03 -0700 "Mike Smout" <mikesmout at sympatico.ca>
writes:
> I've completed the first part of the SX-42 restoration which is the 
> cosmetic part. After sliding the chassis back into the cabinet I 
> built up the nerve to power it up. I know what you're thinking, but 
> I do not own a Variac and the temptation was great. Everything lit 
> up, no smoke, no flames etc. All I got was a hum. My first thoughts 
> are that the electrolytics are shot, so I purchased an entire set of 
> caps *yikes what a job this is gonna be* and will proceed to replace 
> them, at least the ones that I can get at. The chassis is super 
> clean and it appears that there is no leakage from the paper caps. 
> Also, it appears that no one has done any modifications to it at any 
> point in its life. I have tested some of the tubes and a couple are 
> testing border line. Assuming that the electrolytics gave up the 
> ghost, could this have damaged some of the tubes if it were left on 
> for a period of time. I would welcome your suggestions on what to, 
> and what not, to do. Thank you in advance. I also looked at the 
> bandswitch mechanism and switched it with the power on to look for 
> any of the famous "shorting out" and it doesn't do this. Thanks, 
> Mike Smout
> 
> 
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