Which reminds me, if only I can get the flyback transformer fixed on
my old Mac SE I could get it working again! But it's rather specialised
I fear :-)
In general flyback transformers are very much specific to the unit
they're used in. There used to be generic replacements for TV flybacks
back in the 1950s (they had extra tappings, etc, you wired them up
approprialtely for the set they were to be used in), but I've never heard
of them for modern equipment.
Needless to say Apple never supplied any Mac flyback as a spare part.
There were companes who made replacement flybacks for common
monitors/TVs, and I suspect at least some classic Macs were covered. But
I have no idea if they're still available.
-tony