From: liz@poppyrecords.invalid.invalid   
      
   Cursitor Doom  wrote:   
      
   > On Sun, 15 Sep 2024 21:44:07 +0100, 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?   
   >   
   > No, I got the probes directly on the leaves themselves.   
      
   For the future, it is best to arrange the contacts so the gap between   
   them is vertical; that way any dirt falls out of them instead of being   
   ground into the surface.  GPO telephone exchange equipment always had   
   the relays aligned that way.   
      
      
   --   
   ~ Liz Tuddenham ~   
   (Remove the ".invalid"s and add ".co.uk" to reply)   
   www.poppyrecords.co.uk   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)