[Sonic Mega 8K S] Checking the LCD

How can you know the LCD screen on your Sonic Mega 8K S is acting up? If you notice that your LCD test or your print files are failing to print appropriately, there might be an issue with the LCD ribbon cable or/and the LCD screen. 

Before seeking external support or deciding to buy a new piece of LCD screen, it’s worth making some attempts at checking the LCD ribbon cable to see if it is loose or poorly connected. This issue can happen if the cable pins have become loose or shifted out of place. In the meantime, you can also take a close look at the LCD ribbon cable to check if it has been damaged anywhere, especially near the two ends. 

In this article, we will guide you through simple steps to reconnect the LCD ribbon cable, and also check the LCD condition. By taking these steps, we can examine the entire LCD condition to see if the issue was caused by loose connection or external damage.

1. Checking the LCD Cable and Connections

Always disconnect the power source before disassembling any electrical equipment. If it is necessary to handle equipment that is still plugged in, ensure your hands are dry and consider wearing insulation gloves, protective clothing, and shoes with insulated soles if possible.

Power Down and Prepare

• Turn off the printer and unplug it
• Remove the building plate and resin vat
• Remove the 12 screws on the front case and open it

Reattach the mainboard

• Unplug the USB cable and the touch panel cable to remove the front case
• Loosen the 3 screws and take off the mainboard

Identify the LCD ribbon cable 

• Locate the the LCD ribbon cable connecting to the LCD screen and the mainboard

Reseat the LCD ribbon cable

• Open the cable clips on both the mainboard and the LCD
• Detach the ribbon cable from both ends
• Check if the pins on the ribbon cable are facing downwards, then fully insert the cable into the connector
• Once the cable is fully inserted, lock the cable clips to secure the cable in place

Reassemble the printer 

• Reconnect the USB cable and the touch panel cable
• Tighten the 3 screws on the mainboard
• Tighten the 12 screws on the front case to close it

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 → LCD TEST
• Check if the LCD is displaying normally

2. Checking the LCD surface

During the printing process, an incident may occur, causing the LCD to crack irreversibly. To address this issue, it is essential to replace the LCD if any cracks are found. You can check if any cracks exist on the LCD by following the 2 steps below.

• Remove the Black LCD Frame tape around the LCD Screen
• Carefully check the LCD surface (especially around the edges and corners) for any damage/resin spill 

Contact Support

By following these steps, you can quickly and easily check if the LCD issue still remains or can be resolved. If you find any issues, feel free to reach out to Phrozen Support or your Authorized Reseller for further assistance. When contacting Phrozen Support, please provide a video of LCD Test/Dry Run Test, some photos of the LCD Cable Connection, and a video showing the LCD Screen Edge.