Tristar
Voltage Drop / Power Supply Instability
Display flickers or resets when 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 or overloaded outlet, Loose mains connections inside unit, Failing power supply components on main PCB, Shorting heating element
How to Fix / Troubleshooting
Safety: Unplug before opening the unit. Avoid sharing the outlet with other high-wattage appliances.
- External checks:
- Plug the fryer into a different, dedicated outlet.
- Avoid power strips and extension cords.
- Internal wiring:
- Inspect and tighten mains connections at the inlet, switch (if present), and PCB.
- Inspect PCB:
- Look for bulging capacitors or burnt resistors in the low-voltage power supply section.
- Element check:
- Test the heating element for shorts to ground.
- Replace components: Replace the main control PCB if the internal power supply is unstable. Replace the heating element if shorted.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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