Also have a perma sealed battery cover. Poured vinegar in from middle and let soak over night. Wanna drill into coin slot to try and remove cover but need to get batteries out first. Can I just remove the one screw from logic board and disconnect ribbon cable, to have it slide out the power button end? How careful w cable? Looks like it has 2 tiny clips, do these need to be addressed or can I just pry it off?