Won't start
Parts commonly needed when your Samsung ovens & range has this issue. Recommendations are based on repair patterns and may not diagnose your specific problem.
Verified Components
Parts
2Part numbers confirmed across multiple retailers for NX58J7750SS
Repair tips for this issue
From the service manual for Samsung NX58K7850S Series Ovens & Ranges (2018)
From the service manual
Good to know
2 technician insights for the Samsung NX58K7850S Series Ovens & Ranges (2018)
common_failure
When C-21 (oven heating over) is triggered, it fires at 650 F in normal cooking modes. The most common cause is a shorted relay on the Main PCB (RY201-RY204), not a sensor fault. Check relays first.
diagnostic_shortcut
Oven sensor resistance reads 1080 ohm at the sensor itself but 2850 ohm measured at the PCB connector CNS301. These are two different values — measuring at the wrong point and using the wrong spec leads to misdiagnosis.
Seeing an error code on your display? Look up your error code → for more specific diagnostic information.