The LED is where the 3D printer projects UV light through the LCD and cures the resin. The LED may need to be replaced after some time.
LED Chip-on-Board Replacement
- Turn off the printer and unplug the power cable.
- Remove the bottom cover of the printer.
- Unplug the LED module.
- Unscrew the black lens hood.
- Unscrew the frame of the LED lens.
- Unscrew the LED chip-on-board.
- Loosen the red and black wires connecting to the LED driver board.
- Remove the old LED chip-on-board.
- Install the new LED chip-on-board
- Done

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