PAL on an NTSC A2000 with Indivision

[Oldsmobile_Mike]

You don't need an Indivision for that.  Any Amiga with at least the ECS Agnus and Kickstart 2+ can toggle between NTSC & PAL through early startup.  Sounds more like your LCD doesn't support it.

Does your monitor have any sort of auto-adjust features?  Try telling it to adjust again after you've switched to PAL, maybe?

[Oldsmobile_Mike]

Quite a few LCD's don't support 50Hz via analog (VGA port), and fewer still using DVI (though I believe the Indi ECS is VGA only... correct?) If you found one that works, consider yourself lucky. After that, carefully tweaking the monitor settings will often yield a *huge* improvement (specifically, the "clock" or equivalent adjustment).

Correct.  And yes.  

Although I've gotten quite satisfactory "auto-adjustments" using some of the higher end Dell "business-class" monitors.  But I know the lower-end models require a bit more button-pushing.