Charger’s integrated display is very dim or unreadable, while LEDs and charging function normally.

Safety first: Isolate mains before accessing the display module.

• 1. Check settings:
  • If accessible, adjust display brightness/contrast in the charger menu.
• 2. Inspect display module:
  • Open the housing and locate the display board.
  • Ensure its connector to the main board is firmly seated.
• 3. Look for damage:
  • Check for cracks in the LCD or signs of moisture.
• 4. Replace display:
  • If the backlight remains dim or off, replace the display module with a Heidelberg‑approved spare.