[Sonic Mini 4K] Checking the LED

If you notice that your printer’s LCD is dimming or not illuminating, it may be due to issues with the LEDs. This article will guide you through the process of checking your device's LED to check whether the LEDs are properly connected or have burned out.

1. Visual check the LED array

A visual check of the LED array can help identify any faulty LEDs

Power Up and prepare

• Plug in the power cord and switch on the printer.
• Place a few A4 papers on the LCD screen to make it easier to notice any faulty LEDs.

Run vat cleaning function and confirm proper functionality

• On the touch panel, click Vat cleaning
• Check the LED array for any flickering or LEDs not illuminating

DO NOT look directly at the UV light to prevent eye discomfort.

2. Reconnect the LED terminal block

If the LED on the Sonic Mini 4K is not lighting up, check the connection of the LED terminal as it may be the cause of the issue.

Power Down and Prepare

• Turn off the printer
• Loosen the 4 screws on the bottom case and remove the case

Identify the LED terminal block connecting the LED to the mainboard

• Locate the green terminal block on the mainboard, which is used as LED connector

Reseating the LED terminal

• Unplug the LED connector

• Gently tug on the red and black wires for the LED connector
• If the wires have become disconnected from the terminal block, use a screwdriver to reattach them (see below yellow)
• Replug the LED connector back into place

Install the bottom case securely

• Reinstall the front case

Turn on the printer and run an LCD test to confirm proper functionality.

• Plug in the power cord and switch on the printer.
• On the touch panel, click TOOLS, then click LCD TEST.
• Check if the LED is lighting up..

Once you complete the above examination, if the issue still persists please reach out to our customer support team for further assistance. In the meantime, please also provide us with photos of both the LED connection and the LED Test result.

Contact Support

By following these steps, you can quickly and easily check if the LED issue still remains or can be resolved. If the problem persists, reach out to Phrozen support or your authorized reseller for further assistance.