16 Oct
2015
16 Oct
'15
3:25 p.m.
While I was fooling around with my ASCI I decided to test the serial
connection to my PC. The only thing I had available was my CT-1024 terminal
with the optional serial board. This unit never worked when I got it.
Thought it was its ancient and probably non functional PSU, but after
hooking it up to a bench PSU same issues:
1) Unstable video display with large whitish band in the middle.
Could there be a bad smoothing or decoupling capacitor on a power line derived
somewhere within the unit itself, maybe a one to two hundred or so volt supply
to the video output stage coming from the horizontal output stage?
(I've no experince of this terminal so this is just a shot in the dark.)
Regards,
Peter Coghlan.