motorola 19k2

[Electronic M]

If you are getting 300, 265 and 115 volts on three points that are directly connected together with wire, then look for bad solder joints connecting them, and open or high resistance interconnect wire.

Look for heater to cathode shorts in tubes as well. Some sets float the cathodes at a variety of voltages, and if the heater line shorts to two cathodes, or is resistively pulled to a certain voltage and a cathode shorts to it, then all manner of havoc can occur....If you find a tube with a H-K short be sure to look up the max heater to cathode voltage in the tube data sheet, and check that voltage in set set to ensure it is not exceeded.

I wish I had enough sam's to be able to pull the one for any given set and follow along, but I don't.