I think I had better get my special purging resistor out.
It is a great tool for purging all the bad electrons out of cables and especially amplifiers and power supplies.
It can be seen in action purging bad electrons out of a power supply.
The pesky things had been taking short cuts in a transistor so badly than a new transistor had to be fitted before purging.
The bad electrons go away after being made to go around the corners on the six sided former a few times