20 Dec
2022
20 Dec
'22
5:57 p.m.
I had something similar with a VT220. I didn't get around to investigating it
before the flyback transformer failed :-(
I can only suggest to run it for a short time with the cover off and the lights
out while looking for any glows / discharges around the flyback transformer,
the EHT cable, the EHT connector on the tube and the tube base connector.
Regards,
Peter Coghlan.
Ps: Anyone got a flyback transformer for a VT220?
i have a VT100 that is working fine (powers on, navigates setup,
saves/restores settings, etc) but has an unpleasant burning/ozone odor
coming from the rear of it. i suspect something is running hot but i am not
sure what, i do not currently have an IR camera in my hands- working on
that. the original power supply has failed and is currently in storage, so
the terminal is being powered by an ATX power supply and adapter board for
the time being. this eliminates the usual R27 as being the culprit.
as best i can tell, the smell is strongest just above the power
distribution board, around the neck of the CRT. appreciate any suggestions
you might have!