Any ideas on where to look for a replacement LCD?
Marshalljmp sells them. Checkout his website
MJMPs ModShop > Replacement Parts (http://www.marshalljmpmodshop.net/miscellaneous_parts_and_replacement_tubes.htm) ...
Not that I look at it much these days, but my original MP2 display is fading (it was one of the first MP2's to get to Australia) and done many, many gigs etc