Sharp Voltage Drop / Weak Power Supply

Microwave clock resets or display flickers when starting a cooking cycle.

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

Weak household circuit, Loose power cord connection, Failing internal power supply capacitors, Overloaded circuit with other appliances

How to Fix / Troubleshooting

Safety: Unplug the microwave before inspecting the cord or internal components.

Steps:

1. Dedicated outlet: Plug the microwave into a dedicated outlet with no other high-draw devices.
2. Check cord and plug: Inspect for heat damage or looseness. Replace if damaged.

Advanced: A technician can inspect the control board power supply section and replace any failing capacitors or the entire board using Sharp parts.

Repair Difficulty

Medium 3/5

Required Part

Main Control Board

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