Toshiba Power Instability / Brownout Inside Unit

Display and lights flicker or reset when the heater turns on; cooker may restart mid-cycle.

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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 or shared high-load devices, Loose mains cord connection inside cooker, Failing capacitors in main PCB power supply, Partial short in heater wiring

How to Fix / Troubleshooting

Safety: Unplug before internal inspection.

  • 1. Dedicated outlet: Plug the multicooker into a dedicated wall outlet with no other high-wattage appliances.
  • 2. Inspect power cord and strain relief: Ensure the cord is firmly anchored and that internal connections to the PCB are tight.
  • 3. PCB inspection: Check the main PCB for bulging or leaking electrolytic capacitors in the low-voltage supply section. Replace the PCB if components are failing.
  • 4. Heater wiring: Inspect heater wires for partial shorts to chassis or melted insulation.

Do not continue using the cooker if it repeatedly resets; this can corrupt internal memory.

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Repair Difficulty

Hard 4/5

Required Part

Main Control PCB
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