Oven randomly shuts off mid-cycle without error; later can be restarted.

Safety first: Disconnect power before internal inspection.

• Check ventilation and cooling fan: Ensure vents are clear and the cooling fan operates. Overheating can cause thermal cut-outs to open.
• Inspect overheat thermostat: Test the thermostat for proper operation; if it opens at too low a temperature or intermittently, replace it.
• Verify mains connections: Tighten all terminal block screws and inspect for heat damage.
• Door switch: If the oven cuts out when the door is moved or bumped, test and replace the door switch.

Intermittent faults can be difficult to trace; if basic checks do not resolve it, professional diagnosis is advisable.