Fixing a microwave oven that has power but refuses to start when you press the start button involves addressing common control and safety interlock failures. First, check if the child safety lock feature is accidentally engaged. Second, inspect the door latches and internal microswitches to ensure the door closes tightly enough to trip the monitoring switches. Third, perform a hard power reset. You can troubleshoot startup faults safely. You can verify that your corrective action is successful when deactivating the control lock, adjusting misaligned door latches, or replacing a faulty door microswitch allows the microwave to accept your inputs and begin heating immediately.
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