Admiral Oven turning itself off after about 15-20 sec after set to bake

[Redman]

I have a Admiral Mircowave/ oven combo.  the model number sticker is worn off mostly.  the only part of the number I can read is I think an A and then 1 or 2 letters/numbers missing then a 59 blank N -51VWM  The sticker in the microwave also states Magic chef and year 1991
The microwave is a CM47FN-14T and it has the controlls for the oven on it.  (Wall unit) When I press bake and spin the nob to 350 or any temp it clicks on as normal but then after about 15 seconds it shuts of as if I was pressing stop/clear button
Any help would be appreciated

[Repair-man]

It is an electronic control failure. I doubt you can get parts any more, nor would the expense be worth it.