Does anyone know of a source for documentation on this monitor, it was popular on C128 systems. Ideally owners manual and service/schematics.
In Europe the C1901 was similar but I have the US model which has a 4 position mode selector on the front labelled 1,2,3,4.
I've found conflicting info googling
http://ns2.ubbcentral.com/store/item/Vintage-Thomson-4120-Color-CRT-Monitor--Cables---Works-on-Commodore-Amiga_221874422872.html "There is a 4-way switch on the front 1 is for RGB, and 4 is for composite,2 and 3 work with the Luma/Chroma inputs."
https://groups.google.com/forum/m/#!topic/comp.sys.cbm/7NpZt2q8WPs "It's got a four-way switch on the base, for 40 Columns, 80 Col. Monochrome, and two other 80 Col. Modes (All 80's are RGBI). "
Right now it handles CGA fine but I am curious if it can possibly handle MDA?
If anyone knows of a better place to ask please lmk, I was trying to avoid signing upto multiple commodore forums. I've pondered trying to contact Technicolor who consumed Thomson but not clue where to start.
Thanks
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