SB-102 ETAL- Questions Used Heath Gear

[Multi-Volti Devices]

And don't forget the part about keeping ALL body parts away from high (and
even medium) voltage!

Murray

-----Original Message-----
From: Mike Souhrada <wb9iog at revealed.net>
To: HEATH at LISTSERV.TEMPE.GOV <HEATH at LISTSERV.TEMPE.GOV>
Date: Monday, March 22, 1999 1:35 PM
Subject: SB-102 ETAL- Questions Used Heath Gear


>David Waldroupe wrote:
>>
>> Hi everybody, I'm new on the listserve. My name is David.  KE4MKO.  I
>> just bought a SB-102 for $90. the receive is great. The transmit is
>> not so good.
>
>Guys I thought I'd jump into this message because there is a common
>thread on many lists very much like it.
>First, remember that most Heathkits were just that KITS. Although
> some were assembled by Heath. What follows is that the unit may have
> never worked at all! I've found that on more than one occasion. Unit
> looked good but because of an error in wiring it was NOT POSSIBLE
> to work properly ever.
>Before you purchase a unit it is worth your time to look at the
>workmanship
>of the original builder. If you find a rats nest of excess leads,poor
>wraps on terminals, or sloppy soldering you might be better off
>passing it up; or price it accordingly, and be ready for a rebuilt job.
>
>The troubleshooting statement in the kitbulders guide was correct
>"90% of the problems are caused by poor soldering"-believe it.
>A visual check on all the joints would be my first step. Last
>year I worked on a HW 101 that had 3 joints Never Soldered.
>Also the instructions given by Heath re "NS" -(no solder) on multiple
>connections often resulted in the lowest device never being soldered
>because the builder was afraid to really heat up the joint. Check the
>first item on a stack of components like that. Heath should have said
>something like "tack solder".
>
>You must do your homework on these things. That is. start with the
>manual. It's mandatory to do the Final Tests ,voltage testing,and
>possibly the resistance tests provided.
>Note-I've found many of the composition resisters creep way up in
>value after all these years;especially on the 1Meg and over devices.
>I pulled 13 resisters from a HW 101 Driver Board  I'm working on now
>all because they were over 10% in tolerace-many were 30+%.
>
>In addition if you expect to do much restoration find a tube tester.
>Many of the older units have many hours on them  and a new tube
>may be your solution. You may need to look around for a local to
>help you there with the tester.
>
>On the price side-frankly you get what you pay for. Know your seller
>and remember that manals will add possibly $20 to your cost. W7FG.COM
>has many and they are well done. A local may help you there also or
>the list. Remember there are almost 100 pages to copy it's a lot of
>picky work to do that.
>
>I didn't mean to pontificate but I've been there and done that.There are
>many
>younger hams who didn't experience building a kit in days long gone.
>It was fun,and a great learning experince.
>
>Books on restoration: Read anything by J. Carr-"How to troubleshoot
>and repair amateur radio equipment" a Tab book may still be around.
>It was a big help to me getting started on restoration. There are
>others.
>This doesn't answer your question directly but may provide a direction.
>Good luck.
>
>Mike
>Le Claire, Ia
>
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