Please try to download the latest version of firmware from the official website and upgrade it.
① Check whether the LCD screen cable is damaged. If so, it may be caused by the damage of the cable. Conversely, do subsequent investigations.
② Please reintegrate the cable port ends to eliminate the problem of loose wiring or the wiring is not in place.
The above troubleshooting methods cannot solve the problem. We suggest you create an after-sales ticket and our After-sales engineers will help you solve the problem. (Reply time :1 working day)
Please click this link to submit your ticket: