(2)Receiving Card break down (No displaying on the last cabinet), Check if the receiving card is working normally (green indicator twinkling, red indicator keep lighting). (1)Power supply breaks down, Check if the power supply of cabinet is working normally. Common Failures and Solutions of LED Cabinet No Displaying on Single Cabinet Finally, seal the LED display with the same type of gel. Meltdown a little solder wire and touch it with the solder tip, then solder the LEDs and PCB board with the solder wire. And the square hole on the PCB board is for the positive electrode while the round hole is for the negative electrode).
Install the right light beads on the PCB board (the long probe of the LED lamp bead is the positive electrode, and the short one is the negative electrode. Use a tweezer to keep the lamp bead in place, and solder it with soldering iron at a temperature around 40☌ (too high a temperature will damage the LED display) for less than 3 seconds. How to replace LED lamp bead? Remove the gel around the LEDs with sharp tools such as a tweezer until the pins are exposed. How to replace driver IC? First, test the IC card. You can find it through the circuit diagram, and replace it and drive it. First, position the corresponding driver IC. This problem may be caused by the failure of the pins of the driver IC that controls this row. One row of LED display module displaying color inconsistency (3)Change a LED display module to see whether the color missing phenomenon disappears. (2)Check whether the flat cable is working normally. (1)Check the signal cable connection and reconnect, also check the power supply for the first module in the row. (2)Power supply not connect well (no displaying on one corner of a cabinet), Check if the related power supply is working normally and the connection is good. (1)Signal cable not connect well (No displaying on a row of modules), Check the signal cable connection and reconnect, also check the power supply for the first module in the row. If the light bead doesn’t light on, means it is bad. If the LED lamp bead is on, means it still works. Use the X1 resistance function of the multimeter to detect whether the LED lamp beadwork normally or not.Ĭonnect the positive electrode of LEDs with the black probe and the negative electrode with the red probe. Single Pixel Missing, Dark, or Twinkling (for Static Screen) (3)Check whether the power pins of the 74HC138 decoding chip and 4953 line management chip are poor welding or suffering short circuits. If there is a problem, you can choose to replace the flat cable. You can examine it by plugging in and out multiple times. If there is confusing color, then check the signal contact of the first abnormal LED module in the direction of signal input. (2)check whether the signal input is normal.
(1)Check whether the flat cable connects well with the power line of the first abnormal LED module in the direction of signal input. Non displaying on part of the module such as rows missing and lines missing (4)If the problem still exists after replacing the flat cable, check whether the interface of the PCB board is working properly. (3)Input Signal cable breaks down, Change the input signal cable(flat cable). (2)Input Signal cable not connect well, Reconnect the input signal cable(flat cable). For instance, whether the power plug is loose or not. (1)Check whether the power supply contact is normal. Common Failures and Solutions of LED Module No Displaying on a single LED Module So then, what can you do to get your LED wall panel to work again? Find the Source of the Issue!Ħ Bottom Line 1.
But even getting your display fixed can get pretty pricey. Quality LED wall displays can get pretty pricey, and you don’t want to replace the whole display. Now, when you see your LED display not working, it’s only natural to panic. Accidents can happen when cleaning your panels or during maintenance controls. This risk is mostly caused by various conditions, such as rain, snow, hail, wind, and so on.īut don’t think that indoor LED displays can’t get damaged due to accidents too. If you have an LED display panel outside, the chances of your display breaking down are much bigger than if your display were to be indoors. But no matter how well you take care of something, things tend to wear down, especially after long periods.Īnd unfortunately, accidents can happen too. And it will, for a few months or even a few years. Of course, you might think that buying a quality item (in this case, a quality LED display panel) will prevent this from happening.