We have a JennAire model CP220W-C01 cooktop. We use the old coil type heating elements. There was a flash and smoke from the right front element. A repairperson replaced the connector, only to have it blow the same way when it was turned on again. Is it a faulty receptacle where the element plugs into the cartridge or a faulty recepitacle where the catridge plugs into the stove top body or is my problem something deeper?

Unplug the element from the receptacle and then disconnect the receptacle from the point where it plugs into the stove. Now, carefully, turn on power to this heating element. If nothing happens then you have removed the likelihood of a problem in the large portion of the stove's wiring. Next, plug the receptacle cable back into the stove without connecting the heating element. Again, carefully turn on the power to the heating element in question. If there is no spark then the cable, connector and receptacle are ok. If it does spark, replace the receptacle and cable assembly. No spark, then inspect the heating element where it connects to the receptacle. Look for melting or signs of damaged insulation that would allow for a "dead short". If you see damage to the element then replace the element. No damage, clean the connections with a toothbrush, and plug the element back in and turn on the juice. If it sparks again, replace the element. Good luck and be careful. Don't attempt any of this if you are inexperienced in working with electricity. 220 Volts can cause death or serious injury... just the flash from an arc can cause blindness and burns.