FAQs - Mooncell - Professional LED Display Control System Expert

FAQs

Q

When configuring the intelligent settings of the receiving card, it becomes uncontrollable or displays abnormally after the pixel-to-pixel process.

A

Possible Causes :
1. Incorrect selection of module basic information such as chip type and decoding chip.
2. The inherent program of the receiving card does not support the module of the large screen being debugged, and the default common chip is selected as “General-2” for the pixel-to-pixel process.

Troubleshooting :
1. Check whether the module information matches the parameters in the intelligent settings interface.
2. The receiving card defaults to supporting common chips. If special chips such as PWM are used, the receiving card needs to be upgraded.
3. For RC32, select “Enable V50 card expansion mode (1 group of 3 lines).
Q

After confirming that the intelligent settings information and operations are correct, the large screen goes black after sending data.

A

Possible Causes:
1. The resolution of the sending card does not match the video source (graphics card resolution).
2. The calibration function of the large screen is enabled (the large screen has not been calibrated).

Troubleshooting Steps:
1. Verify whether the resolution of the sending card matches the video source.
2. Disable the pixel-to-pixel calibration function.
Q

Screen/box jittering, flashing white bars, or dot phenomena are observed.

A

Possible Causes:
1. Incorrect cabinet file parameters.
2. Video source input issues (frame screen inconsistency with the sending card)/interference.
3. Optimization required for inherent receiver card programs.

Recommended Troubleshooting Steps:
1. Adjust the cabinet file parameters. Select “Synchronous Refresh” and set the video source frame screen to 60Hz. The data shift clock is recommended to be adjusted to 17.86MHz or below, and the frame change time to 150,000.
2. Re-plug the DVI cable.
3. Replace the DVI cable/replace the sending card.
4. Check the receiver card program version.
Q

After splicing, the right or bottom of the large screen is uncontrolled or displays red, indicating “DVI” not connected.

A

Possible Causes:
1. The loading on a single network port of the sending card exceeds the limit (maximum load of 650,000 pixels).
2. The resolution of the input video source is smaller than the resolution of the large screen.

Troubleshooting Steps:
1. Calculate the loading on a single network card. If it exceeds the limit, reduce it to within the maximum loading.
2. Calculate the resolution of the input video source. Ensure that the resolution of the input video source is greater than or equal to the actual resolution of the large screen.
3. Check if the offset of the video capture/PO, P1 output ports of the sending card is 0.
Q

Not all receiving cards are detected, but the screen displays normally.

A

Possible Causes:
1. The program of the undetected receiving card is different from the program of other cards.
2. There is a problem with the network cable, and the error rate is very high.
3. Incorrect software version.
4. Mixing T6 and FPGA cards.

Troubleshooting :
1. Upgrade the program to be the same.
2. Replace with a good network cable.
3. Download the latest software from the official website(www.mooncelltech.com)
4. Separate the T6 card and FPGA card for debugging and saving.
Q

When displaying a black color on the LED screen, there is a slight brightness in the background.

A

Possible Causes:
1. Output problem with the graphics card.
2. Issue with the video cable.
3. Problem with the input port of the sending card.

Troubleshooting :
1. Adjust the grayscale of the graphics card to complete (0-255).
2. Replace the video cable.
3. Replace the sending card to confirm the issue.
Q

The color display of some modules with the same parameter is abnormal.

A

Possible Causes:
1. These modules are not from the same batch as the other modules, resulting in color differences.
2. Hardware problems with the modules or adapter boards, possibly due to missing components.
3. The programs for the modules with abnormal displays are different.

Troubleshooting:
1. Batch adjustment can be performed to adjust the overall brightness closer.
2. Compare the hardware with the modules that display correctly to identify any hardware differences and make the hardware consistent.
3. Upgrade the programs of these modules to match those of the other modules.
Q

Unable to detect sending card

A

Possible Causes:

1. Poor USB cable connection when controlling via USB cable.
2. Damage to USB driver of control computer.
3. Poor contact of network port when controlling via network port.
4. Incorrect network settings when controlling via network port.
5. Firewall or antivirus software restrictions when controlling via network port.
6. Damage to sending card.

Troubleshooting:

1. Replug the USB cable and check both the cable and the USB interface on the computer.
2. Reinstall the latest version of the debugging software, including USB drivers
3. Replug the control network cable and check both the network cable and the computer network port.
4. Set the computer Ethernet TCP/IPv4 to automatic IP and DNS addresses
5. Disable computer firewall and antivirus software
6. Change the sending card

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