Top oven of model 171607 is not working. Light in oven goes on. Thermometer does not light up.

AGE OF IT MIGHT BE THE DETERMINING FACTOR OLD PARTS ARE HARD TO FIND

Please provide me with model number from the serial plate.

Located behind a removable plate at the top centre front just below the display. Plate becomes accessible when you open the door!!

Two possible problems. If the oven has two or more elements for normal operation then one of these elements may be faulty. The thermostat may also be faulty and only heating to a far lesser temperature than required. The way to tell is turn the oven to a normal cooking temperature.
If the oven indicator light stays on all the time and doesn't cycle off then it may be an element problem, meaning that the oven can't reach the temperature setting desired.
If the oven indicator light goes off after a while and then cycles on and off then the thermostat is working correctly but the temperature may not be hot enough. You may have to purchase a small oven thermometer and check the oven temperature against the thermometer to get a better idea of what the problem is.

Thermostat may need adjusting OR air may be entering the oven causing the problem

the range has two thermostats one for each oven located under the oven knobs. put a meat thermometer in the oven and adjust the thermostat screw with a small flat screwdriver untill the oven turns off at the correct knob temp.
registered on the thermometer.
then adjust the knob screw on the back of the knob to match that temp setting.
clockwise is hotter counterclockwise is cooler

HI thanks for the question. its a common problem with the clocks. first it goes a little dimmer. then a little more till it goes so dim you cant even see the temperature that you have in the oven. the clock has to be replaced. or. buy a cheap oven thermometer. and hang on the middle rack, and adjust the temp setting to match the oven temp . save a lot of money this way. thanks. please rate my answer. thanks

Thermador SCD302 upper oven preheat does not work; the heat temperature goes up very slow.

WHAT WAS HAPPENING AT 1ST YOUR HI-LIMIT TERMAL SAFETY OR OVEN TEMP SENSOR FELT THAT THE OVEN WAS GET TOO HOT AND SEIZING OPERATION UNTIL SAFE TEMP WERE OBTAINED THIS IS GENERALLY A FAULTY OVEN TEMP SENSOR. I WOULD ADVISE YOU TO CONTACT A CERTIFIED TECH TO LOOK AT IT AND P.S. DON'T MENTION THAT YOU TOOK THE MACHINE APART MOST SERVICE COMPANIES WILL NOT SERVICE THE MACHINE IF IT BEEN TAMPER WITH BY THE CUSTOMER DUE TO INSURANCE AND LIABILITIES

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is this a gas oven or electric?