Going over a POTO for a friend...Went to do some basic tests and the service button is missing the inside button....There are only 2 buttons and there should be 3 working correct? I see one that is broken off but I see no wires anywhere that would have gone to the broken button solder legs....Not sure if I am missing the button but even if it was not broken off there are no wires going to it and no loose wires anywhere on coin door