The jig is up

INSUBCONTINENT EXCLUSIVE:
It back 40 years ago, and this pilot fish is working in the repair department of a company that manufactures microwave transmitting
equipment for the telecom industry
(But it 40 years ago, so you all should know who uses this stuff.)One bright morning, fish has a transmitter board in a jig so he can test
it, and no matter what he does, the readings aren&t coming out right
Fish opens the jig to see if there a problem, and finds that one of the wires going to the power supply is just barely hanging on by a
thread
He sees evidence of arcing that would explain why the readings are messed up.Confident that the tech assisting him has thrown the circuit
breaker, fish reaches in to tighten the connection.