Rangemaster Catastrophic Electrical Failure

Garbage disposal makes a loud pop and stops working; a smell of burnt electronics may be present.

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

Exploded start capacitor, shorted control PCB component, internal arcing in motor windings, surge damage from mains spike

Safety first: Immediately turn off power at the breaker. Do not attempt to restart the unit.

Visual inspection: With power off, remove any external covers (capacitor housing, junction box) and look for burnt components or ruptured capacitors.
Do not energise again: A component that has failed with a loud pop is unsafe. Further energising can cause fire or shock.
Replace affected parts or unit: While an external capacitor can sometimes be replaced, a burnt control PCB or motor generally means the disposal should be replaced.

Professional Required 5/5

Start capacitor or control PCB

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