[net.micro.amiga] "Black" screen & phospher burnout

mwm%ucbopal@BERKELEY.EDU (04/17/86)

From: Mike (I'll be mellow when I'm dead) Meyer <mwm%ucbopal@BERKELEY.EDU>

For many years, I've heard that it's a bad to leave a video tube on,
as you can burn the phospher out. However, that's always been with
black and "white" tubes. I naturally assumed that this would carry
over to color tubes, and have been turning my Amiga monitor off. This
is undoubtedly bad for the tube, though.

The solution adopted by terminal manufacturers has been tubes that
shut themselves "off" after some period of inactivity. The solution
for Suns & uvaxs and the like has been a program/mode that makes the
screen black - as if it were turned off - along with some moving
graphics to show you that it's on. I decided this would be a win on
the Amiga, and wrote a program that opens a two-color screen, makes
one color black, and puts a moving copy of clock on the screen.

Trouble is, "black" isn't black - you get a grey from the interlace
lines, even on an interlaced screen. Anyone know how to get a
black-like-the-screen-tube-was-off black on the Amiga? Or a better
solution to the phospher-burnout/power-on problem?

	Thanx,
	<mike