[Chad Hauris]

One thing I have done is to use a 100 ohm 10 watt resistor between the silicon diode and the power line...this helps pad down the voltage to the right level and helps provide surge protection to the diode. Make sure that the old selenium is electrically disconnected from the circuit.

Also inserting a fuse in the power line is a good idea for extra protection...1/2 amp will probably do.

I don't believe in the Variac tricks for reforming electrolytics...just replace those old caps. It's not too difficult and you will have many more years of good performance. To check for shorts I do use a series light bulb (60 watts) on the power line to the set. Watch out, the chassis is connected to power line.