Kibo informs me that "Craig Hart" stated that:

IMHO if it's a DVD player giving you black and white, I'd be 99% sure it's
outputting the wrong standard eg NTSC, PAL-60 or whatever, and your set is
expecting something different (eg PAL-50).

Yes, so would I. Another possibilty is that the SCART cable is broken or
not seated correctly, & the TV isn't getting all the colour data.

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