MasterPro Voltage Drop / Internal Power Instability

Display and lights flicker or reset when the heater turns on.

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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

Weak household circuit, Loose power cord connection, Failing internal power supply capacitors, Loose heater wiring causing arcing

How to Fix / Troubleshooting

Safety first: Unplug the cooker before internal inspection.

External checks:

  • Try a different outlet on a separate circuit, avoiding extension cords.
  • Ensure the power cord is firmly plugged into both the cooker (if detachable) and the wall.

Internal checks (qualified DIYers):

  • Inspect the heater terminals and AC input connections for looseness or burn marks; tighten or replace as needed.
  • Examine the main control board for bulging or leaking capacitors in the power supply section.

Resolution: If flickering persists on a good circuit, the main control board's power supply is likely failing and should be replaced.

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Repair Difficulty

Hard 4/5

Required Part

Main Control Board
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