Tore into a broken Branson Ultra-sonic cleaner this am. Belongs to a buddy that stopped using it when it went “silent”. Started by cleaning off a thick layer of grunge (his shop looks much the same). I have no idea what 1/2 the controls and printed boards are for, but quickly determined the wind up timer switch (also acts as on/off) is fried. Jumped it out and the tank came to life. Well marked, four pole switch, German made. God bless the Internet, one on order! Might be able to clean a full rack of carbs one day soon! This thing is 5 X the size of mine.