Microwave beeps and shows E04; turntable and light do not come on; unit will not start.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety Warning: Always unplug the microwave before removing any panels. Avoid spraying liquids directly on the control panel.
Steps to try:
- Power reset: Unplug the microwave for 5–10 minutes to allow the control board to fully discharge, then plug it back in and test.
- Dry the control area: If steam or liquid has recently contacted the keypad, leave the door open and allow the unit to air dry for several hours.
- Check that the control panel is not physically damaged (cracks, dents, or stuck keys).
Advanced steps (for experienced DIYers):
- Unplug the unit and remove the top/side cover as required to access the control panel.
- Carefully disconnect and reseat the keypad ribbon cable on the main control board, ensuring it is fully inserted and straight.
- Inspect the ribbon for corrosion or burn marks; if damaged, replace the control panel/touchpad assembly.
- If E04 persists, the main control PCB may need replacement.
If you are not comfortable opening the unit, schedule service with a technician.
Repair Difficulty
Required Part
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