[Hallicrafters] SX-42 Hum(bug)

[Duane Fischer, W8DBF]

First, it appears that you have little, if any experience and knowledge, in
these matters. We were all there once upon a time. This is not a job for a
novice Mike. Get somebody in your area in Sarnia, or Port Huron, to help you.
There are Hams, or radio devotees out there who would be happy to guide you
along.	
	
If you continue down the path you have started upon, it is likely you may damage
more than you fix. One thing breaking can cause a domino effect.	
	
Duane Fischer, W8DBF	


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From: Mike Smout <mikesmout at sympatico.ca>
To: hallicrafters at mailman.qth.net
Subject: [Hallicrafters] SX-42 Hum(bug)
Date: Monday, July 29, 2002 9:53 AM

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
mechan