Re: Not Snopes
" It's probably the same part of me that found satisfaction in fixing a CRT monitor by smacking it smartly on the side."
Early video terminals had an acoustic delay line. Bang the case and the display was corrupted. Popularly people said the letters all fell to the bottom of the screen.
The English Electric KDF9 was a second generation mainframe with a modular rack for the circuit boards and module boxes. One of these modules was part of the program stack nesting store. It was a work of art in tiny ferrite beads threaded onto a matrix of coloured wires - which you could see through the perspex sides. One day one was plugged into the wrong section of the rack. All the wires instantly fused - and the ferrite beads fell to the bottom of the module. A literal case of "dropped bits".