[Heath] SB-102 part needed

[G3OOU at aol.com]

Hi Sandy
 
The PA loading and IF filter control knobs can be repaired if you have the  
patience. There are two ways to achieve this:
 
1) Replace the broken section completely with a very thin brass spacer and  
use a countersunk fixing bolt in the centre of the spacer with the threaded 
 end araldited into the body of the knob. I used a 10BA bolt which are  
available from model suppliers and a sub miniature switch spacer - if you have  
access to a small lathe you could turn up something in brass. Araldite is a 
 two pack epoxy resin cement in the UK. This is the strongest solution and 
I have  yet to have one break.
 
2) Drill a clearance hole through the broken part into the main body of the 
 knob in which a cut down dressmaking pin is Araldited into place. This 
keeps the  original appearance of the knob but it not as strong as in 1) above. 
You may  need to roughen the outer surface of the pin with a miniature file 
to aid  adhesion.
 
There are photos of my repairs in 
http://www.qsl.net/g3oou/heathsparesandrepairs.html but  the text is "between versions" at the moment and needs some 
corrections. However  it should be clear enough.
 
73

Bob

Bob F Burns G3OOU
C  Eng, FIET, MSE
G-QRP 6907
Secretary of Crystal Palace Radio &  Electronics Club: www.g3oou.co.uk
Technical web site:  www.qsl.net/g3oou
@BobFBurns on Twitter:  http://twitter.com/BobFBurns
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