It doesn't enhance electrical safety, but allows you to make a necessary repair in a pinch ... Replace with a ground-fault circuit-interrupter (GFCI) receptacle This significantly improves ...

Thus it’s also not a staple of the repair ... fault-finding ensues, and perhaps with a little bit of embarrassment, he eventually discovers a blob of solder shorting a collector resistor to ground.

Finding out the location of the fault itself was quite a feat ... You can read lots of other interesting bits about this repair job from [jwz]’s blog. Thanks to [J. Peterson] for sending ...