F19
Hotpoint
Low Voltage or Power Supply Instability
Display flickers, resets, or shows low-voltage error when oven elements switch 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
Loose mains terminal block, Undersized house wiring or weak breaker, Failing internal power supply on PCB, Poor neutral connection
How to Fix / Troubleshooting
Safety: Work on mains connections only if you are competent. Always isolate power first.
- Check mains terminal block: Remove the rear cover and inspect the incoming terminal block. Tighten all screws and look for signs of overheating. Replace if damaged.
- Inspect supply cable: Ensure the cooker cable is of the correct size and not heat-damaged.
- Measure supply voltage: A qualified person can measure voltage at the terminal block with and without load. Significant drop under load indicates a supply issue.
- PCB power supply: If the house supply is stable, the low-voltage section of the main PCB may be failing. Replace the main control board.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board (Power Supply Section)
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