Hi,Welcome to Just Answer, My name is XXXXX XXXXX forward to helping you today.
is this gas or electric? does it have a clock with hands that go around?
the ticking is the clock motor itself, this is common on these older models, its not dangerous but is annoying, the only way to stop this is disconnect the clock motor, however if you do this the clock will no longer move or time the bake. can you find a model # ?