1. Determine whether your display screen is synchronous or asynchronous; The display of synchronous displays depends on the display settings, while asynchronous displays do not depend on the display settings;
2. Determine whether your display screen has a partial display issue or a problem with the entire screen display; Abnormal local display can rule out communication issues. Generally, it can be determined that the display screen hardware is faulty. You should contact us immediately to prevent the problem from escalating; There are various possible reasons for abnormal full screen display: for synchronous display screens, you should confirm whether the display settings have changed, whether communication is normal, whether transmission is normal, and then whether reception is normal; For asynchronous display screens, the first step is to confirm whether the parameters of the display screen, such as hardware address, width, height, and IP, have changed. If these parameters are correct, then test whether communication is normal. Finally, determine whether the display screen control is normal and whether the display unit board interface is correct