Hisense
Display Power / Backlight Issue
Display 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 backlight LEDs, Failing display power regulator on main PCB, Loose display connector, Voltage drop due to failing SMPS
How to Fix / Troubleshooting
Safety first: Unplug the unit before accessing the control panel.
- Check power source: Avoid using long extension cords or overloaded power strips that can cause voltage drop.
- Inspect display connector: Open the control panel and reseat the display cable.
- Look for heat damage: Check the display PCB and nearby components for discoloration or burnt marks.
- Test with minimal load: Run the unit at a low temperature and see if flicker persists. If it worsens with heater on, the power supply may be weak.
- Replace module: Replace the display PCB if only the backlight is failing; replace the main PCB if the power regulator is defective.
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Repair Difficulty
Medium
3/5
Required Part
Display PCB Module
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