D Finnigan <dog_cow@macgui.com> wrote:
Wholly Mindless wrote:
The good news is that the THUNK is what they all do - apparently this the
automatic degaussing feature that many crts had.
I had assumed that it was just the sound of high tension entering the CRT.
I may be mistaken, but I don't believe that the AppleColor RGB has a
degausser.
I once was party to quite the shenanigan involving my GS monitor: I had been
fooling about with a rare-earth metal magnet (liberated from a 1992-era
Quantum hard disk drive), pulling the electron gun until rather a nasty
blotch took up residence on the screen. Well of course it had no intentions
of leaving!
The solution I devised was to lift the GS monitor and hold its screen flat
against the screen of my Mac mini's 17" CRT. I powered on the larger
monitor, whose automatic degausser was only too happy to assist with the GS
monitor as well.
An amusing solution, I'm sure.
I think almost all color monitors (and TVs) came with degaussers--a
practical necessity on a planet with a magnetic field. ;-) But the were
never intended to deal with strongly magnetized shadow masks, which is what
you get if you get close with a rare earth magnet.