First post. Glad I found this site.
I have a Frigidaire gallery model LGEF3033KWC range that is not heating properly. Purchased Dec 2010 from Lowes.
The symptom is that when preheating to say 350 the oven will beep ready but the internal thermometer dial (from the grocery store) says that the oven is say 175. Then while baking and the oven is set for 350, the dial from the thermometer will jump to maybe 450.
Checking sites like this and others I have run Ohm meter tests on the internal temp probe and the internal covered bake element. Both have responded back with Ohm readings within range for those parts.
According to the Lowes appliance rep if those parts are ok then it is probably the control board and given it is 5 years old, time to buy a new stove.
Looking for validation of my findings or even better, a better diagnosis of what is actually wrong?
On a side note, my wife lined the bottom of the stove for Thanksgiving cooking with alum foil even though the stove has a hidden bake element. It was the first time she ever bothered to do that and it completely melted the alum. foil to the bottom tray of the stove. That is why we started looking at something being wrong. (Later I checked the owners manual and saw where it said not to line the bottom with foil.)