It's fairly well known the early compact Mac had power supply that was barely adequate (I must've replaced hundreds of those when I was working at a after market Mac repair shop in the early 90s.) While there, I spoke to someone that claims to have been an contractor working at Apple during initial 128k development, and his statement was to the effect that the power supply problem was known long before the release, but the management (I would think that's St. Steve) ignored repeated warnings and released the unit with weak power supply anyways..