[Sonic Mini 8K S] Replacing the LED

The LED Chip-on-Board (COB) is an essential component in Sonic Mini 8K S that projects UV light through the LCD to cure resin and create your 3D models. However, the LED may experience wear and tear over time and eventually become burnt out.

Replacing the LED is therefore necessary to ensure that the printer is functioning optimally and producing high-quality prints consistently. In this article, we'll guide you through the process of replacing the LED in your Sonic Mini 8K S.

Removing the Old LED Chip-on-Board

1. Turn off the printer and remove the UV cover, resin vat, and building plate
2. Carefully lay dwon your printer
3. Loosen the 4 screws on the bottom case, and then open the case

4. Unplug the LED connector and Fan connector and remove the bottom case

5. Remove the black lens hood by loosening the 4 screws

6. Remove the LED lens frame by loosening the 4 screws

7. Remove the LED COB by unscrewing it and disconnecting the red and black wires from the marked LED driver board (see the blue and yellow marks below)

Installation the New LED Chip-on-Board

1. Install a new LED chip-on-board onto the heat sink
2. Reconnect the red and black wire pair on the LED driver board
3. Install the LED lens onto the chip-on-board
4. Attach the black lens hood onto the base cover
5. Reinstall the bottom case
6. Perform LCD test to ensure that the LED is functioning properly
7. Done

Handle the components with care during reinstallation and to tighten all screws and cables securely