How to fix a plugged-in billboard that doesn’t light up?
本文目录一览
- I、Half of a word in a billboard light box is lit and half is not lit
- II、How to install billboard LED display speakers
- III、How to clear all the way in the billboard light controller
LED light boxes are generally composed of words and marquees on the frame. The reasons for not lighting up:
1. The power supply is not connected Good;
2. The controller does not close the switch;
3. The power supply voltage is not enough;
4. The resistor has a short circuit problem;
5. There is leakage in the line;
6. If it is one of If a word or a group of colors in the running edge does not light up, it may be that the thyristor driving that path is damaged. It is more likely that one or more LED light-emitting tubes in the LED string in the word are damaged. The cause of the damage is Because the current drawn by the LED is too large, it generally cannot exceed 15mA.
7. If all the lights are off, the internal controller may be damaged.
If the LED light box does not emit light caused by the above reasons, we need to solve them one by one. Check whether the power supply is connected accurately, check whether the switch controller is closed, test whether the power supply voltage is sufficient and stable, inspect the resistance circuit problem, and use a test pen to test Is there any leakage in the circuit?
The following introduces other situations and reasons why the luminous characters do not light up:
1. What are the reasons why the luminous characters do not light up?
1. All the lights do not light up: Check whether the LED light source circuit and the transformer are connected correctly, or there is a weak solder in a certain line port;
2. All lights suddenly go off: the luminous characters light up for a flash during operation. It all went out. This must be a transformer failure. The wrong wiring connection burned out the LED lights;
3. Some lights are on: some are on and some are not: this is the cause of the LED lights. Make adjustments to the LED lights.
2. How to implement the inspection steps?
1. _⒐庺槳槳槳氖 neon roasted 颍枰ㄒ诹谦豱袴螰ぷCharming cough burst out of nightmare hemorrhoids Zhu 鱱amine ⒐庺quality generation children charming cough north 匦氪枔trees 薨 Advisory gluttonous stool hemorrhoids Live R worm toe crook eat 诓 駧 child box song bed 駧 駧 straight 绻嫫妧 飧 绻绻廛四 2. Handle the luminous words with care, and you need to pay attention to the angle of holding. , when disassembling and assembling the outer frame of the luminous characters, be sure to hold it flat and gently, and prohibit collision and distortion;
3. Is the power cord on the upper part of the luminous characters in the power outlet slot, and is the power supply ready?
4. The luminous characters do not light up. , please check whether the leakage protector is closed, whether the wire connectors in the plug are loose, whether the input and output connectors of the ballast are loose, etc.
The troubleshooting method is as follows:
1. Loose lines
(1) First check to see if the serial port cable used to connect the controller is loose or falling off. (If it turns black during the initial loading process, it is probably because the communication line is loose and interrupted during the communication process, so the screen turns black. Do not mistakenly think that the screen body is not moving, and the line cannot be loose. Please Check first, but this is very important to solve the problem quickly
(2) Check and confirm whether the LED screen and the HUB distribution board connected to the main control card are tightly connected and whether they are plugged in reversely.
2. Power supply problem
Please make sure that all hardware, including the control system, is powered on correctly. Is the power light flashing? Is there any failure in the power supply? It is worth noting that this phenomenon is usually easy to occur when using inferior power supply. .
3. LED unit board connection problems
(1) If several boards in a row do not light up in the vertical direction, check whether the power supply of this column is normal. (2) If several boards in a row do not light up in the horizontal direction, check the normal unit board. Whether the cable connection with the abnormal unit board is connected; or whether the chip 245 is normal?
4. Software settings or lamp problems
If there is a clear boundary between the two, it is possible that it is caused by the software or settings. If there is a uniform transition between the two, it may be a lamp problem. The above is the reason why the LED display is half on and half off. Check the possible causes one by one to quickly locate the cause. Or if the problem cannot be confirmed, please contact your service manufacturer for technical support
1. The power supply is not connected Good;
2. The controller does not close the switch;
3. The power supply voltage is not enough;
4. The resistor has a short circuit problem;
5. There is leakage in the line;
6. If it is one of If a word or a group of colors in the running edge does not light up, it may be that the thyristor driving that path is damaged. It is more likely that one or more LED light-emitting tubes in the LED string in the word are damaged. The cause of the damage is Because the current drawn by the LED is too large, it generally cannot exceed 15mA.
7. If all the lights are off, the internal controller may be damaged.
If the LED light box does not emit light caused by the above reasons, we need to solve them one by one. Check whether the power supply is connected accurately, check whether the switch controller is closed, test whether the power supply voltage is sufficient and stable, inspect the resistance circuit problem, and use a test pen to test Is there any leakage in the circuit?
The following introduces other situations and reasons why the luminous characters do not light up:
1. What are the reasons why the luminous characters do not light up?
1. All the lights do not light up: Check whether the LED light source circuit and the transformer are connected correctly, or there is a weak solder in a certain line port;
2. All lights suddenly go off: the luminous characters light up for a flash during operation. It all went out. This must be a transformer failure. The wrong wiring connection burned out the LED lights;
3. Some lights are on: some are on and some are not: this is the cause of the LED lights. Make adjustments to the LED lights.
2. How to implement the inspection steps?
1. _⒐庺槳槳槳氖 neon roasted 颍枰ㄒ诹谦豱袴螰ぷCharming cough burst out of nightmare hemorrhoids Zhu 鱱amine ⒐庺quality generation children charming cough north 匦氪枔trees 薨 Advisory gluttonous stool hemorrhoids Live R worm toe crook eat 诓 駧 child box song bed 駧 駧 straight 绻嫫妧 飧 绻绻廛四 2. Handle the luminous words with care, and you need to pay attention to the angle of holding. , when disassembling and assembling the outer frame of the luminous characters, be sure to hold it flat and gently, and prohibit collision and distortion;
3. Is the power cord on the upper part of the luminous characters in the power outlet slot, and is the power supply ready?
4. The luminous characters do not light up. , please check whether the leakage protector is closed, whether the wire connectors in the plug are loose, whether the input and output connectors of the ballast are loose, etc.
The troubleshooting method is as follows:
1. Loose lines
(1) First check to see if the serial port cable used to connect the controller is loose or falling off. (If it turns black during the initial loading process, it is probably because the communication line is loose and interrupted during the communication process, so the screen turns black. Do not mistakenly think that the screen body is not moving, and the line cannot be loose. Please Check first, but this is very important to solve the problem quickly
(2) Check and confirm whether the LED screen and the HUB distribution board connected to the main control card are tightly connected and whether they are plugged in reversely.
2. Power supply problem
Please make sure that all hardware, including the control system, is powered on correctly. Is the power light flashing? Is there any failure in the power supply? It is worth noting that this phenomenon is usually easy to occur when using inferior power supply. .
3. LED unit board connection problems
(1) If several boards in a row do not light up in the vertical direction, check whether the power supply of this column is normal. (2) If several boards in a row do not light up in the horizontal direction, check the normal unit board. Whether the cable connection with the abnormal unit board is connected; or whether the chip 245 is normal?
4. Software settings or lamp problems
If there is a clear boundary between the two, it is possible that it is caused by the software or settings. If there is a uniform transition between the two, it may be a lamp problem. The above is the reason why the LED display is half on and half off. Check the possible causes one by one to quickly locate the cause. Or if the problem cannot be confirmed, please contact your service manufacturer for technical support
How to install billboard LED display speakers. 1. First, connect the audio cable to the TV.
2. Then plug the audio power supply into the socket.
3. Then connect the two channel audio cables to the speaker.
4. Then make sure the audio power is on.
5. Then make sure that the volume is not turned down to the minimum, and ensure that the sound can be heard after turning it on.
6. Finally, if there is no problem, the speaker will be successfully connected to the TV.
The simplest way is to add a light energy 701 card. The sending card needs to use 702702 with audio output. No matter how far the transmission is, there will be no problem. The audio signal is converted into a digital signal through 702. The light energy 701 converts the digital signal into an audio signal and sends it to the power amplifier, and then connects the speaker and the power amplifier together.
2. Then plug the audio power supply into the socket.
3. Then connect the two channel audio cables to the speaker.
4. Then make sure the audio power is on.
5. Then make sure that the volume is not turned down to the minimum, and ensure that the sound can be heard after turning it on.
6. Finally, if there is no problem, the speaker will be successfully connected to the TV.
The simplest way is to add a light energy 701 card. The sending card needs to use 702702 with audio output. No matter how far the transmission is, there will be no problem. The audio signal is converted into a digital signal through 702. The light energy 701 converts the digital signal into an audio signal and sends it to the power amplifier, and then connects the speaker and the power amplifier together.
Clearing the data in the LED display is very simple. Generally, you only need to insert the USB disk with the data and replace it. Discharge the control card and clear the data: There is a button battery on the control card. Unplug it, wait for 1 minute, and then the data will be cleared. Use the control card editing software to re-edit the file: delete the original data, re-edit the data, and re-import it.