Sharp No Power / Main Fuse or Power Supply Failure

Refrigerator does not start at all, no lights or display.

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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

Tripped household breaker, Faulty power cord, Blown internal fuse on main PCB, Failed main control board power supply

How to Fix / Troubleshooting

Safety: Always unplug the refrigerator before opening any electrical compartments. If you are not comfortable working with mains voltage, contact a professional.

Steps:

  • Check outlet: Plug a lamp or tester into the same outlet to confirm power. Reset the breaker or replace the fuse if needed.
  • Inspect power cord: Look for cuts, burns, or kinks. Replace the cord if damaged.
  • Access main PCB: Remove the rear control cover and inspect for an onboard fuse. Test and replace with the same rating if blown.
  • Board inspection: If the fuse blows again immediately or the board shows burn marks, the main control board likely needs replacement.
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Repair Difficulty

Hard 4/5

Required Part

Main Control Board
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