according to MAME it's a 27c040: https://github.com/mamedev/mame/blob/master/src/mame/drivers/gaelco.cpp#L1051Hi,
Still waiting for few chips to make sync cleaner... anyway, Could someone identify sound chip rom type...if someone has take rom-dump from it
Tried that grounding wire, no help. Still same issues with sync. Scooping continues...