Black & White Screen ! Please Help Me !

Urso (31-07-2001 21:03):
I have some PS2 back ups that work perfectly on a TV screen (color images). And I have an old monitor (of the Commodore Amiga), where I can connect the PS2, with the normal cable that came with it ! But the problem is... If I put a DVD, a PSX (back up) or an original PS2 game, I see color images (on that monitor), but if I use a PS2 back up, I see the image but only in grey scale (black & white) !
Does anybody knows the reason of it and can help me !
I would like to use the monitor instead of a TV set.
Thanks !

Accepting the validity of DEWEZZEL's answer last week, let's try and unpick this one.

1/
The TV works perfectly using the standard PS2 cable. So that means the electronics of your TV (modulation detection etc) matches whatever is output by the PS2. You don't mention whether or not there is a mix of NTSC & PAL backups nor whether you've patched the backups for PAL. (I assume from your spelling of Grey that you're in a PAL country).

2/
You say that the AMiga monitor doesn't like backups. Now I don't know much about the Amiga (for example I thought it used an RGB monitor of the SVGA kind). But if it's a TV type of monitor, then it seems not to be the same modulation specification as your regular TV; thus it cannot sync with the colour when it displays greyscale. So, what else could be different? Well, have the backups been patched for PAL? Or are they NTSC and the Amiga Monitor, not being to the high spec of your TV cannot resolve the colour? The originals would work if the PS2 output matched the modulation of the Amiga monitor.

I know what I'm trying to say. Hope it makes sense to you. Very intriguing.