[Sonic Mighty 12K] Replacing the LED

The LED Chip-on-Board (COB) is an essential component in Sonic Mighty 12K 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 Mighty 12K.

You can check out the reference replacement steps from Sonic Mighty 8K below.

1. Removing the Old LED Chip-on-Board

Remove the front case and rear case

• Turn off the printer and unplug it.
• Remove the UV cover, resin vat, and building plate.
• Loosen the 4 screws on the front case and the 8 screws on the rear case.

• Remove the front case and the rear case.

Remove the top half of the printer

• Detach the motor cable.
• Open the cable clip and detach the LCD ribbon cable connecting to the mainboard.
• Loosen the 8 screws on the printer's platform and remove the top half of the printer.

Remove the old LED

• Disconnect the 2 pairs of red and black wire from the LED driver board.

• Loosen the 4 screws that secure the LED driver board and remove it.
• Loosen the black lens hood and remove it.
• Loosen the 4 screws on the LED lens and remove it (see the below pic).

• Take the old LED Chip-on-Board outside.

2. Installing the New LED Chip-on-Board

Install the new LED

• Place a new LED chip-on-board onto the heat sink.
• Install the LED lens onto the chip-on-board.
• Attach the black lens hood onto the LED lens.
• Secure the LED driver board back into place.
• Reconnect the red and black wire pairs from the LED driver board.

Reassemble the printer

• Carefully reassemble the top half of the printer by tightening the 8 screws.
• Reattach the LCD ribbon cable to the mainboard.
• Reattach the motor cable.
• Reinstall the front case and rear case.

Verify the new LED’s functionality 

• Plug in the power cord and switch on the printer.
• Perform the built-in LCD Test to check if the new LED works properly.

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

Contact Support

By following the above instruction, you can easily replace the LED of your Sonic Mighty Revo printer. If you find any issues, feel free to reach out to Phrozen Support or your Authorized Reseller for further assistance. When contacting Phrozen Support, kindly send some photos or videos illustrating the issue.