What Are The Reasons For The Black Screen Of The LCD Screen?
- Jul 25, 2018 -

             

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There are two reasons for the black screen of the LCD screen. One is the black screen of the monitor caused by the fault of the host computer, and the other is the black screen fault caused by the monitor itself.


     Display black screen caused by computer host failure

     Is the host power supply working?

     Is the host power supply working?

     Is the display card in good contact with the monitor signal line?

     Is the display card installed correctly and is in good contact with the motherboard slot?

     Is the memory module in good contact with the motherboard and the quality of the memory module is too good?

     Is the CPU in good contact with the motherboard?

     Is the bus frequency, system frequency, and DIMM jumper of the motherboard correct?

     Is the parameter setting correct and the system software settings are correct?

     Is the environmental factor normal?


     Black screen failure caused by the display itself

     Whether the fuse is blown, whether the rectifier bridge switch is broken, whether the current limiting protection resistor is blown, etc.

     The failure of the line scan circuit is an important cause of no raster and no screen display after the display is powered up.

     If the picture tube and its power supply circuit are abnormal, the display can be powered up without a raster black screen.