Enter password: 2580
2. Press F9 button on the remote control
If the backlight is on, while the screen glass off, you can refresh the main board software. If it’s still not working, you need to check the T-CON board, cables, etc.
If the backlight is off, it caused by the short circuit of the inner strip light.
Make sure the stylus pen has power.
Use the touch overlay software to test the frame, and check if the inbuilt Bluetooth adaptor is normal.
Press the Restart button on the optical stylus pen to start it again, and then try to connect the pen.
Contact a IN-Display Interactive representative at +85291448986 or click below to send us a note.