Magic?
No, just percussive maintenance.
"Back in the day", as they say, we had several large metal cased Microvitec monitors. For those not familiar with them they were literally cubic. There was a known fault where occasionally a connection would get too near the top of the case causing instability in the image. The common fix was to give the case a "tap" which usually worked, or of course...
You'd carefully explain to the user that the following process required special skills and should only be attempted by an IT professional. At which point you'd bang both sides of the monitor with your fists, usually causing the user and colleagues to just about jump out of their chairs. The only skill was in getting the maximum effect while not leaving any tell-take dents in the casing.
Biting the hand that feeds IT
