i HAVE A FRIGIDAIRE MODEL fef389wecc THA TAKES FOREVER TO HEAT UP. THE RELAY ON THE CONTROLE CARD ONLY STAYS ON FOR A FEW SECONDS. THE TOP ELEMENT IS GETTING 240 VOLTS TO IT BUT THE BOTTON GETS ONLY ABOUT 50 VOLTS.
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Replacement parts for FRIGIDAIRE FEF389WECC | AppliancePartsPros.com
Here is a wiring diagram, note it si for wfcc which is the closest I could find
http://manuals.frigidaire.com/prodinfo_pdf/Springfield/316002638.pdf
Note the parts has a wiring diagram but it is pretty blurry.
[COLOR=Blue]THE RELAY ON THE CONTROLE CARD ONLY STAYS ON FOR A FEW SECONDS.[/COLOR]
The first thing I would check is the temp sensor since the relay is switching the element on/off.
Here is a good site with basic oven repair info
http://www.applianceaid.com/elecrange.html
Check out # 7 & 8
Note that a poor connection can also do this re: the sensor’s resistance is directly proportional to the temp so if a bad connection adds resistance to the circuit the control board thinks the oven is hotter than it actually is.
[COLOR=Blue]THE TOP ELEMENT IS GETTING 240 VOLTS TO IT BUT THE BOTTON GETS ONLY ABOUT 50 VOLTS.[/COLOR]
The 50 volts may just be ghost voltage, though it does seem a little high for this or the bake relay contacts are badly pitted dropping the voltage.