Bunn Display / Backlight Failure

Bunn coffee maker's digital display is blank or very dim, but the unit still heats or brews.

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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

Failed LCD or LED display module, Loose display ribbon cable, Faulty backlight driver on control board, Low voltage to display

How to Fix / Troubleshooting

Safety: Unplug the brewer before accessing the control panel.

Steps:

  • 1. Check contrast/brightness: Some models have a contrast or brightness setting in the menu. Adjust if available.
  • 2. Inspect ribbon cable: Remove the front panel and reseat the ribbon cable between the display and control board.
  • 3. Look for damage: Check the display for cracks or moisture intrusion. Replace the display module if physically damaged.
  • 4. Control board: If the display and cable are good but still blank, the display driver on the control board may have failed. Replace the control board.
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Repair Difficulty

Medium 3/5

Required Part

Display Module
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