Hi, I have an old (very very old) magic chef, gourmet collection stove that's probably 30 or 40 years old (its my grandparents) and the timer all of a sudden started going off. Every time I turn it off the ticking noise (more like ringing sound) never stops. Please help me, this is just awful and is so annoying getting up in the middle of the night to turn it off. Thanks, Lania