The LCD screen is black. How can we find the cause?

Now the use of liquid crystal display screen has gradually replaced the traditional display screen, because compared with the traditional LCD screen, has no battery radiation, display information, long service life and other advantages, which is favored by many users. And now more and more liquid crystal equipment, there are more and more failures, black screen, flower screen # tft жк-дисплей 2,4 #, flash screen is often encountered problems, then lcd LCD black screen how to troubleshoot the cause? The following Xiaobian to introduce to you.

1. Check the power supply

Black screen first check whether the power supply is connected, whether the cable is loose, resulting in a power cut, so that theLCD screen # tft touch display # will be black, can be connected with the main board again, and clean the line position contaminated foreign matter, eliminate whether the cause of the power supply LCD screen black.

2, check the current and voltage

Check whether the supplied current and voltage are supplied according to the requirements of the TFT screen operation manual. If the current and voltageLCD  are too high or too low, the TFT screen # tft spi interface lcd display # will be black, or even sometimes the lcd screen will burn. If the LCD screen is burned, it will smell a burning smell.

3. Check the mainboard

Check whether the mainboard is abnormal. Use a multimeter to test the power supply of the mainboard to eliminate the black TFT screen caused by the mainboard problem.

According to the above method to check the specific reasons, if theLCD display itself is abnormal, it should be given to professional personnel for maintenance, or directly replace theLCD. Choose TFT screen# tft screen module # to choose long service life, can save a lot of maintenance costs.

The above content is the lcd screen black screen how to check the introduction of the cause, in addition, do not let any moisture into the LCD screen, such as indoor humidity is too high inside the LCD screen # tft panel supplier # may produce condensation phenomenon, so that the LCD screen leakage and short circuit, serious will burn the display. For the larger humidity in some southern areas, the LCD display can be placed in a warmer and drier place, but also regularly with a small power table lamp on the back of the LCD display to bake, in order to let the moisture evaporate.