CGA monitor on eBay

[Tony Duell]

> Surely it's easier to provide RGB inputs than composite though - to do
> RGB (and seperate sync inputs) isn't it almost as simple as feeding the
> signals into the right point of the existing TV circuitry, whereas to
> cope with composite you'd need circuitry to split the signals out at
> extra cost?

Yes, but that circuity -- the colour decoder -- must exist in a TV 
anyway. The signal you get from the video detector (at the output of the 
video IF strip) is essentially a composite video signal.

RGB is slightly harder to provide (you have to switch 3 or 4 signals, not 
just 1), but only slighty.


> 
> You could well be right though - I'm almost certain that my Domesday
> setup (which only does video overlay on RGB outputs) wouldn't work with
> my cheap 14" TV via the SCART connector when I tried it.

That could be a lot of things, including not enabling the RGB inputs on 
the SCART connector. This is sometimes done by selecting a special 
'channel' with the remote control, sometimes by applying 12V or so to the 
right pin on the SCART connector. Do you have a service manual for the TV 
(and if not, why the heck not?)

-tony