Yes I did have another Kortek which I bought from Robbie in Lelystad, that one was NIB and NOS !
I <think> it is in the Galaxian....
There used to be a TV via SCART in there but it didnt work 100% on Galaxian (it did when it was still in the Centipede).
The only other monitor replacement I did was on the Ms.Pac and thats one of the "Irish" NOS/NIB Wells Gardners....so the Kortek must be in the Galaxian....
Why didnt I think about that last night ? Oh I remember, I actually played all my working games last night !!!
Gee I know the Hanatex Polo doesnt have a very good reputation when its having problems, but boy does it look brilliant in the Joust

will check tonight....