Maintenance knowledge of TFT LCD:
As we know, TFT LCD display has four parts: computer control part, display driving matrix, LCD array and power supply. So, we can analyze the possible problems through the following aspects:
Display problem: the LCD screen may be damaged and aged after long-term use. It can be repaired and replaced.
Power supply: TFT LCD adopts low-voltage high current power supply, which is not different from ordinary DC power supply.
Interface problem: phenomenon: computer information cannot be displayed. Check the cable.
Drive problem: each row and column are not displayed. It is a problem with the corresponding drive circuit (chip) and can be replaced.
There may be many reasons for abnormal display of the whole screen:
For asynchronous LCD, first confirm whether the hardware address, width, height, IP and other parameters of the display have changed. If these parameters are correct, test whether the communication is normal. After that, determine whether the LCD display control is normal.
For the synchronous LCD screen, you should confirm whether the display settings are changed, whether the communication is normal, whether the transmission is normal, and then whether the reception is normal.
The 8 inch displays might be affected and delay for an accident.
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