Sharp Display / Control Power Failure

Microwave display is blank or very dim, but interior light may still work when door opens.

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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.

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Possible Causes

Blown internal fuse on control board, Failed display module, Faulty low-voltage transformer or regulator, Loose control board connectors

How to Fix / Troubleshooting

Safety: Unplug the microwave before removing the control panel or cabinet.

Steps:

  • 1. Check outlet: Confirm the outlet has power by plugging in another device.
  • 2. Power reset: Unplug for several minutes and reconnect. If the display remains blank, internal power to the control board is likely lost.

Advanced: A technician can check internal fuses, low-voltage supplies, and the display module. Replace the display or main control board with Sharp parts as needed.

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Repair Difficulty

Hard 4/5

Required Part

Display Control Board
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