Yes, this seems to be a common problem with U202/U203 chips on A3000 motherboards:
http://peach.mie.utoronto.ca/people/tsangc/a3000-2.guide Search for U202 and read the interesting information about
U202/203: Chips That Overheat :-o :-)
a pair of Programmable Array Logic chips (format: 16L8-10)...The Commodore part references are 390526-02, 390527-02...GAL16V8's have been tested and checked
by Simon Goodwin. Simon notes you'll need a fast GAL and a programmer that can convert between both formats.
:-D
