conk out -
stop operating or functioning; "The engine finally went"; "The car died on the road"; "The bus we travelled in broke down on the way to town"; "The coffee maker broke"; "The engine failed on the way to town"; "her eyesight went after the accident"
change undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night"
go down,
crash be defeated; "If America goes down, the free world will go down, too"
burn out,
blow out,
blow melt, break, or become otherwise unusable; "The lightbulbs blew out"; "The fuse blew"
misfire fail to fire or detonate; "The guns misfired"
malfunction,
misfunction fail to function or function improperly; "the coffee maker malfunctioned"
conk out -
use up all one's strength and energy and stop working; "At the end of the march, I pooped out"
