New cylinder available from Out of Doors Mart, just like orignal, goes right in. Comes with new key. DO NOT REMOVE the key until you have inserted the cylinder into the lock. Key holds tumbler pins in place until insertation. Door bell: could simply be the button. Pry it out, remove 2 small wires, replace it with one from Lowes. It is lighted.Could be the unit itself,under the couch, also replaced with one from Lowes.
10 bucks, 10 minutes,done. There is a small fuse inside the unit . Might check it. John
Region 3 , 1st VP
Go often to the house of a friend, for weeds choke the unused path........Emerson
Never pick a fight with an old man. If he is too old to fight he will just kill you........a wise old man.