Microwave displays H98 and does not heat; may stop shortly after starting.

Safety First: Do not attempt to service the high-voltage section unless you are qualified. Always unplug the microwave and be aware that the capacitor can retain a dangerous charge.

• Power reset: Unplug for 10–15 minutes and retry. If H98 returns immediately, a high-voltage fault is likely.
• Check for burning smell: A burnt odor or visible smoke previously may indicate a failed magnetron or diode.
• Internal inspection (for professionals): Remove the cover and inspect the magnetron, high-voltage diode, and wiring for burns or arcing marks.
• Component testing: Use appropriate high-voltage-safe methods to test the magnetron, diode, and transformer/inverter. Replace any failed components.
• Seek professional help: Because of the risk of electric shock and radiation leakage if improperly reassembled, this repair should be done by a qualified technician.