From: roger@hayter.org   
      
   On 15 Sep 2024 at 21:44:07 BST, "Liz Tuddenham"  wrote:   
      
   > Nick Hayward  wrote:   
   >   
   >> Hi all,   
   >>   
   >> I have a switch which isn't making electrical contact. It consists of two   
   >> leaf springs. Dead simple. They're springy enough to push against each   
   >> other alright. And I've cleaned them with ethanol (didn't work) isopropyl   
   >> alcohol (didn't work) and Servisol switch cleaning lubricant (didn't work   
   >> either). I am at a complete loss here. Has anyone come across something   
   >> like this? I can confidently say I never have!   
   >   
   > I have had this happen when Hypoy gear oil has got on the contacts, but   
   > as other have said, the fault may be elsewhere.  Were you making your   
   > measurements directly on the springs or on something attached to them?   
      
   A possibly short term solution is to rub very fine folded over emery paper   
   between the contacts. It tends to destroy plated contacts but might just get   
   the switch working.   
      
   --   
   Roger Hayter   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)