Most common fault was Magnets
Desk toy magnets usually, move magnet and to there amazement usually fixed, and don't forget the odd Degaussing button if it had one.
Also had the "i need a bigger monitor", followed by "i need a bigger desk".
When i eventually retired my two home desktop monitors i was told at the local refuse site that they are company waste as no-one has two extremely large monitors on one computer , therefore i must be dumping at the household site as a company.
Two trips to two other sites later and bye bye monitors.
Biting the hand that feeds IT
