22 Sep
2014
22 Sep
'14
10:35 a.m.
Another
terminal question. I have an ADM-5 here which works fine but
when switched off, the display colpases into a very bright vertical line
and then to a single point in the center of the screen. This then lasts
for about 10 seconds and always happens regardless of the brightness
setting. Question is, is this normal and if not, is it likely to damage
the phosphor over time?
This is not normal and is probably indicative of a problem
in the CRT
drive circuitry. A CRT based terminal is very much like a television in
this regard. (This behavior can show up on TVs and it is also not
normal there.)