Gram
User Interface Input Failure
Oven display works but buttons or knobs do not respond; cannot start any program.
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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
Faulty touch panel or encoder, Broken ribbon cable between UI and PCB, Stuck key causing lockout, UI board not powered correctly
How to Fix / Troubleshooting
Safety first: Disconnect power before removing the control panel.
Steps to check:
- Inspect the control knobs or touch panel for physical damage or signs of liquid ingress.
- Remove the control fascia and check the ribbon cable between the UI and main PCB; reseat or replace if damaged.
- If a mechanical selector switch is used, test it for continuity in different positions; replace if contacts are faulty.
- Replace the user interface board if inputs remain unresponsive after cable and switch checks.
Warning: Avoid flexing the ribbon cable excessively; it can crack internally.
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Repair Difficulty
Medium
3/5
Required Part
User Interface Control Panel
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