1.POS cash register display black screen
A. Is there no power supply? Check the power supply status of the chassis power supply and the power cable. Check whether the interface and power cable of the main chassis are loose and the display is turned on. If the interface and the power cable are damaged or broken, replace them in time. Check whether the power supply fan is exhausted.
B. Is the power cable and data cable of the monitor connected? If the monitor is changed to another computer, it can be displayed normally.
C. Whether the data line of the display is broken or deformed.
D. If it is working, the computer has a black screen that is intermittent, which is affected by voltage instability, and will return to normal when the voltage is stable.
2. The display keeps flashing
It may be that the signal line connecting the monitor to the computer is loose and can be re-inserted. It is also possible that the adjustment button at the bottom of the display is in poor contact and can be adjusted.
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