POS cash register display black screen problem


What should I do if the POS cash register display is black?

(1) Whether there is 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.

(2) Whether the power cable and data cable of the monitor are connected properly; whether the monitor can be displayed if it is changed to another computer.

(3) Whether the data line of the display is broken or deformed.

(4) 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.

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