Safety: Disconnect power before accessing the display.

Check brightness settings: Some models allow dimming the display. Ensure it is not set to the lowest brightness.
Inspect connections: Remove the control panel and check the display module connector. Reseat it firmly.
Look for physical damage: Cracks in the display board or moisture marks indicate the need for replacement.
Replace display module: Install a new Aobosi-compatible display/control assembly if segments are permanently missing or the backlight has failed.

Display is dim, flickering, or some segments are missing, but cooling is normal.

Possible Causes