Caple Power Supply Instability

Caple oven display dims significantly when heating starts, or the oven resets mid-cycle.

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.

Possible Causes

Loose mains connection at terminal block, Undersized supply cable, Failing mains filter or PSU on PCB, Overloaded circuit shared with other appliances

How to Fix / Troubleshooting

Safety first: Turn off power at the consumer unit before checking connections.

Inspect terminal block: Tighten all live, neutral, and earth screws. Look for signs of overheating or discoloration.
Check supply cable: Confirm that the oven is wired with the correct cable size and breaker rating as specified by Caple.
Reduce load: Avoid running other high-power appliances on the same circuit while testing.
Inspect PSU: If dimming persists, the low-voltage power supply on the PCB may be failing. Replace the main PCB.

Repair Difficulty

Hard 4/5

Required Part

Mains Terminal Block

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