MS1033, Universal Power Supply for Nikon, Olympus, Zeiss, Leica, Leitz, Accu-Scope, and any other microscope that uses a 6v 20w or 6v 30w power supply.  This power supply is 3 3/4" x 3" x 1 1/4" and comes with mounting flanges.  There are seven wires to be spliced.  Blue wires go to a 10k ohm rheostat (which most microscopes use, or can be supplied), red/black wires go to the bulb and brown/blue/green wires to power. Very easy to install with a small amount of electrical and mechanical ability.  Don't toss the microscopes because the power supply fails.No returns accepted on this item.  We have no way to guarantee correct installation by end users. 

Universal Microscope Power Supply