Tristar Memory / Backup Power Loss

Coffee maker randomly resets the clock or loses programmed settings.

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

Weak backup capacitor or battery on PCB, Power interruptions from loose cord, Firmware issue, Faulty control PCB

Safety first: Unplug before opening the housing.

Stable power: Plug the Tristar coffee maker directly into a wall outlet, avoiding shared high-load circuits.
Check cord and plug: Ensure the plug fits snugly and the cord is not loose at the entry point.
Internal check (advanced): Inspect the PCB for a small backup battery or supercapacitor. If visibly leaking or swollen, it should be replaced by a technician.

Note: If settings are lost every time the unit is unplugged, this may be normal for some basic models without backup memory.

Medium 3/5

Main Control PCB (Backup Power Circuit)

Check Price on Amazon

We may earn a commission from links on this page.