There is a lot of interest in restoring the Telechron clocks found on some Tappan Deluxe stoves. With the help of one of the folks on twitter @clockhistory, I was able to track down an excellent video on reviving a Telechron clock rotor
@clockhistory says NOT to turn the gear with a pliers like they do in the video....and the NOS H and S rotors are still available - if coil hums but gears doesn't turn, the rotor is the problem. For rotors go to timesavers.com, search for "rotor", you'll see S (the smaller type) and H rotors.
I have not tried the steps in the video, so try it at your own risk (although I can't see much that could go wrong) I am very interested to hear from anyone that does get a non-working clock going again. The video is actually quite good to watch, even if your Telechron clock is currently working.