[Jukebox-list] Seeburg reversing switch contact problem

[Chad P. Hauris]

Hello...would appreciate any advice on contact point restoration. We  
are working on an SPS-160 which is having an intermittent motor speed  
problem due to arcing at the reversing switch points. Have used a  
proper contact burnishing tool plus a lint free cloth saturated with  
deoxit gently pulled between the points. Have cleaned with contact  
cleaner spray then dried with canned air to remove any residue.

You can see little arcs going across the closed points....had this  
problem on a Wurlitzer 2800 keyboard latch switch and ended up having  
to have a relay do the actual switching with one good contact on the  
switch stack activating the relay as  no cleaning or burnishing could  
eliminate the arcing between the closed points.


Chad Hauris
Retro Electronics, Midland, Texas
http://www.retroaudiolab.com