Chefman Power Supply Instability / Loose Connection

Display or indicator lights flicker or reset during brewing.

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 power cord connection at unit, Faulty outlet or power strip, Loose internal wiring to control board, Failing low-voltage power supply on PCB

Safety first: Unplug the coffee maker before inspecting the cord.

Steps:

Plug the coffee maker directly into a wall outlet, avoiding extension cords or power strips.
Ensure the plug fits snugly in the outlet; try a different outlet if necessary.
If flickering continues, internal wiring or the control board power supply may be failing and should be inspected by a technician.

Hard 4/5

Main Control PCB

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