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Schematics VT220 1987 version

Roland Huisman

Veteran Member
Joined
Mar 24, 2011
Messages
1,466
Location
The Netherlands
My green phosphor VT220 died. The power LED is blinking fast because the power supply goes into current limiting... After removing the EHT transistor the power starts normal. The transistor itself is okay so I'm for 99% sure the line output transformer is broken.

My terminal is from 1987, but the schematics online seem to be from 1983 and the schematics are completely different. Can anyone help me to find the original schematics of the later versions?

This is the transformer from which I think it is bad... Any after market replacements known?

LOPT.jpg

Regards, Roland
 
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