Motorola Enhanced MVA part needed

My MVA (Convert-A-Com) smoked the other day and now charging circut does not
work. Replaced some electrolitic capacitors and it worked for a day or so then
did the same thing. now the voltage reg. next to the capacitors blew up as well.
need someone who knows his stuff to find the heart of the problem (or find a new
circut board.) Help!

This MVA is for the 99 chan. MT1000