[Brad Winder]

The Candohm resistor "strips" are a known failure point. But, also check to make sure the long screw isn't contacting any components under the chassis when its installed. Sometimes things get shifted a bit under the chassis when work is done to it, but also it's quite common for a chassis screw or bolt to be lost during the past lifetime of the set, and someone puts in a substitute that is too long, and it causes a short by touching wires, etc.