¶ Issue Description
After the printer is powered on, the touch screen remains stuck on the ELEGOO logo screen and cannot proceed to the main menu.
¶ Possible Causes
- Firmware corruption.
- A connected component may be short-circuited.
¶ Required Tools and Materials
- A USB flash drive with a capacity of less than 16 GB, formatted in FAT32.
- 2.0 mm Allen key.
¶ Troubleshooting Steps
¶ 1. Update the Repair Firmware
- Insert the USB flash drive into your computer and format it using the FAT32 file system.
| Operating System | Instructions | Reference Image |
|---|---|---|
| Windows | Select the USB flash drive, then click Format > FAT32 > Start. |  |
| macOS | Select the USB flash drive, click Erase, select MS-DOS (FAT 32) or MS-DOS (FAT), and then click Erase. |  |
-
Download the repair firmware.
-
Extract the downloaded ZIP file and copy the repair firmware file (
ChituUpgrade.bin) to the root directory of the USB flash drive.
Note: The root directory is the first directory displayed when you open the USB flash drive.
-
Insert the USB flash drive into the printer and restart the printer. The repair firmware will be installed automatically.
-
Determine the next troubleshooting step based on the result of the repair firmware update.
- If the touch screen remains stuck on the loading screen, proceed to Step 2: Check for Short Circuits in Connected Components.
- If the touch screen can access the menu interface, update the firmware again by following the instructions below.
Note: Select the appropriate firmware update method based on whether a capacitor is installed on the mainboard. The firmware update procedures for the Saturn 4 Ultra and Saturn 4 Ultra 16K are the same.
| Does the Mainboard Have a Capacitor? | Firmware Update Method | Update Guide | Firmware Download |
|---|---|---|---|
| Yes | USB Flash Drive | USB Firmware Update Guide | Firmware for Mainboards with Capacitors Only |
| No | OTA Update | OTA Firmware Update Guide | / |
¶ 2. Check for Short Circuits in Connected Components
2.1 Turn off the printer and unplug the power adapter.
2.2 Remove the seven screws securing the rear panel.
2.3 Disconnect the other cables marked in the image, but leave the touch screen cable connected. Then reconnect the power adapter, turn on the printer, and check whether the touch screen can access the menu interface.
- If the touch screen still cannot access the menu interface, the mainboard may be faulty and should be replaced.
- If the touch screen can access the menu interface normally, one of the components connected to the mainboard may be short-circuited. Replace the faulty component and record its part number or name.
¶ Contact Technical Support
If the issue persists after completing the troubleshooting steps above, please provide the following information when contacting Technical Support:
- Test result: Can the touch screen access the menu interface after the repair firmware has been installed?
- Can the touch screen access the menu interface when all other connectors are disconnected from the mainboard and only the touch screen cable remains connected?
- Which component causes the touch screen to get stuck on the loading screen when connected to the mainboard individually?
- Provide clear, high-resolution photos of the mainboard from the angles shown below.
¶ Help Us Improve
If you have any suggestions for improving our wiki pages, please let us know through the ELEGOO official feedback channel.