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Panasonic combi model: NN-A574SBBTQ Grill function stopped working. Microwave function works ok. Checked so far: Both internal fuses ok Thermal cutout ok New quartz grill element replaced (twin) Control panel & display appear to be working perfectly. Door switches appear working ok. No power to grill element. Possibly a power relay failure, but not sure how to identify this part or if its easily replaceable?

Tim, normally we suggest to people to stay away from the microwave repair. I guess in your case, and since you are already up to your armpits in it, it is okay to suggest something. get the service manual from here. It does have the diagrams as well as parts description etc. The troubleshooting section says that:" Symptom

  1. Oven is dead. Fuse is OK No display and no operation at all. Cause
  2. Open or loose lead wire harness.
  3. Open low voltage transformer.
  4. Defective DPC AU or DPC DU Again, please be careful, would not want you to get zapped (or is it fried:-) anyhow, good luck. hope this helps.

Yes thanks, I identified RY4 on the wiring diagram but not physically - its not on parts list. If its on one of the boards can it be replaced or even tested ?

The grill shuts off after 4 minutes Panasonic NN K18JMM