door ajar chime/buzzer will not shut off

Probably what you need to do is find out which door is causing your problem and repair it. It is more of an issue than an annoying chime. Do this - get some lubricant (WD40 if nothing else) and spray it into the door latches themselves. Then open and close the doors a few times to hopefully free up the switch on the door latch. This often can work. If not, then the affected switch must be replaced.