LED display connection refers to the connection of LED display components through wires, which can allow the LED display to obtain power, and at the same time to read and transmit data. If you don’t know much about LED display connections, then this article will provide you with detailed knowledge.
LED display connection needs to use the wire and its process
Power Cord
The wire that delivers power to the LED display is called the power cable, which can provide the basic guarantee for the operation of the LED display.
In order to let you better understand the connection process of LED display power cable, we will start from the power switch, in the order of connection for you to introduce:
- The power switch uses the power cable to connect with the power distribution cabinet.
- The power distribution cabinet uses the main cable to connect with the power flight plug on the cabinet.
- The power plug is connected to the power supply unit in the cabinet using the power cable.
- The power supply unit is connected to the LED module using the power cable. (Note: The voltage is 5V.)
- The power supply unit is connected to the other power plug using the power cord. (Note: The voltage is the voltage of the power switch)
- The power supply unit is connected to the power supply plug of the next cabinet using the power cord.
- After that, the power cord on the cabinet is connected as above, until the last cabinet completes the power cord connection.
Data Cables
The cable that transmits data to the LED display is called data cable, which is mainly composed of row cable and network cable.
In order to give you a better understanding of the LED display data cable connection process, we will start from the data source, that is, the computer, in order for you to introduce:
- The computer with Windows system uses HDMI cable to connect with the LED video processor.
- Video processor through the network cable and the cabinet of the data flight plug to connect.
- The data flight plug is connected to the control card via a network cable.
- There are two ways to connect the control card to the LED modules.
- One is that the control card is connected to one of the LED modules, and then a short row of wires is used to connect the neighboring LED modules to form a connection loop, which is suitable for the LED display with low resolution.
- There is also a control card with a long row of wires to connect with each LED module, this connection is suitable for high resolution LED display.
- The control card uses a network cable to connect with another data flight plug.
- This data flight plug uses a data cable to connect with the data flight plug of the next cabinet.
- After that, the data line connection on the cabinet is consistent with the above until the last cabinet completes the data line connection.
What are the types of LED display connections?
Wired connection
Wired connection is to connect the LED display and controller through wires. This type of connection can bring stable data and power delivery to the LED display, and at the same time, real-time switching of the display screen of the LED display.
Wireless connection
Wireless connection is to place the controller with WiFi or 4G module in the LED display, and control the LED display through the Internet signal. This kind of connection is able to operate the LED display remotely.
What are the ways of LED display connection?
The LED display connection here is mainly the way of connection between the LED beads on the PCB board. Before connecting the LED light beads, you need to judge the positive and negative poles of the LED light beads’ pins: the longer pins are positive, and the shorter pins are negative.
Series connection: the positive pole of the power supply is connected to the negative pole of the LED bead, the positive pole of the LED bead is connected to the negative pole of the next LED bead, and this connection is repeated until the positive pole of the last LED bead is connected to the negative pole of the power supply.
Parallel connection: the LED lamp beads are connected side by side or in parallel, that is, the positive pole of the power supply will be connected to the negative pole of each LED lamp bead, and the positive pole of each LED lamp bead can be connected to the negative pole of the power supply. This way the LED beads can be controlled individually.
Multiplexing: its connection form and parallel connection of the same way, but its use of technology and parallel circuit technology is different, it can be in accordance with a certain arrangement of the principle of connecting the circuit in order to transmit signals.
LED display connection problems how to solve?
LED display black screen
| Problem | Solution |
| Damaged power supply unit | Replace the power supply unit |
| The power supply unit is not suitable for the local voltage | The original power supply unit can be replaced with a dial-up power supply |
| Loose power cord | Re-plug the power cord |
| Damaged power cord | Replacement of the power cord |
| Incorrect connection of the power cord of the LED display | Check the connection of the power cord and readjust the wrong connection. |
LED display flickers
| Problems | Solution |
| Loose data cable | Reconnect the data cable and make sure it is secure |
| Damaged cable | Replace the damaged cable with a good one |
| Incorrect parameterization of the controller | Seek assistance from a qualified technician to set the correct parameters |
| Poor contact of the power cord | Check if the plug of the power cord is oxidized. If so, please replace it in time |
Localized LED display does not show
| Problems | Solution |
| Damaged LED module | Replace the LED module with the same batch |
| Loose power cord connecting LED module | Check and re-insert the loose power cord |
| Loose data cable connected to the LED module | Check and re-plug the data cable |
LED display cannot receive signal
| Problem | Solution |
| Wrong connection between data cable and control card | Re-install correctly |
| Loose connection between the data cable and the control card | Check the data cable and unplug the loose cable |
| Loose connection between control card and LED module | Check the data cable between the control card and LED module, and reinstall the loose data cable |
| The network cable connected to the controller is notched | Repair or replace the cable |
Conclusion
Through the study of this article, I believe you can have a good understanding of the process, types and methods of LED display connection. If you don’t understand a certain point very well, then you can consult us and we will solve your doubts.
