7 common faults and maintenance measures for small-pitch LED screens

7 common faults and maintenance measures for small-pitch LED screens
Q1: A single module does not light up
A: First check whether the adapter board is in poor contact; then check whether the power socket is loose; mainly to check whether the signal transmission cable is in normal contact, if the contact is poor, you need to re-plug the cable, or replace the cable. If the problem still exists after wiring, check whether the interface of the module is in good contact.
Q2: Multiple cabinets do not light up
A: First consider the power transmission problem, start from the front of the problem box to check whether the switching power supply is normal, check whether the network cable is loose and the signal has not been transmitted, and the rest is the problem of damage to the receiving card.
Q3: Large horizontal and vertical areas are not bright
A: First, confirm the problem of the main network cable, and then further investigate the problem of poor contact of the short network cable inside the screen body; usually, the power supply problem inside the screen body will also cause a large area not to light up.

Q4: LED screen color difference
A: The uneven temperature of the LED display leads to display color problems. It is necessary to do a good job of cooling the LED video wall.
Q5: No signal on the screen
A: First, check whether the DVI or HDMI signal line is well connected; if it is not the signal line problem, confirm whether the copy mode or expansion mode in the computer display control panel is normal; or set the corresponding signal source in the processor correctly.
Q6: One or more cabinets do not light up
A: Check the power indicator and power supply cable inside the screen to ensure that the power supply of the screen is normal; then check whether the green light of the receiving card indicator flashes normally and whether there is signal transmission; finally, check whether the network cable connection is normal, and replace it in time if any problem is found.
Q7: The whole screen of the LED display is not bright
A: Check whether the power supply of the distribution box is normal; check whether the power supply of the screen body is normal.