Ultima Cosa
Display Power / Backlight Issue
Display works but is very dim or flickers during operation.
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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
Weak low-voltage supply from main PCB, Loose display connector, Failing LED backlight in display module, Voltage drop due to poor mains connection
How to Fix / Troubleshooting
Safety first: Unplug the unit before accessing the control panel.
- Check mains connection: Ensure the plug fits tightly in the outlet and the outlet is not loose.
- Inspect display connector: Remove the control housing and reseat the display module connector on the main PCB.
- Look for heat damage: Check the area around the display power regulator on the PCB for discoloration. If present, replace the main control PCB.
- Replace display module: If the backlight itself is failing, install a new Ultima Cosa display module compatible with your model.
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Repair Difficulty
Medium
3/5
Required Part
Display Module
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