Tuning problem in SB-101

[Bob Burns]

Hi Ken
 
You are correct about the tagged washers which act as a stop in both  
directions. The grease dries to a sticky and ultimately solid gunge so cleaning  and 
regreasing is the only real option. You might be able to squirt some switch  
cleaner on the problem if you can find a convenient hole in the VFO casing but  
removal for cleaning is the most reliable option.
 
You might be able to remove the VFO on its own but I normally drop the  front 
panel forward to make access much easier. Be careful with the moulded VFO  
disk mechanism (calibrated 0 - 100) behind the front panel as they get very  
brittle with age. Look and see if there is any evidence of crazing in the clear  
plastic around the centre shaft as that is the area that is most  stressed.
 
I had heard that someone in the States was making new ones but never  managed 
to track them down.
 
73

Bob 

G3OOU
G-QRP  6907
_http://members.aol.com/rfcburns_ (http://members.aol.com/rfcburns) 



   

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