If some areas of the LED display cannot be displayed, you can take the following steps to solve the problem:
1. Check power and connections:
- First, make sure the power supply to the display is normal and there is no power outage or voltage instability.
- Check whether the connection between the display screen, power supply, control card and other equipment is firm and there is no looseness or poor contact.
2. Check the data cable:
- Check whether the data cable related to the undisplayable area is connected correctly and not damaged or broken.
- If you find a problem with the data cable, try replacing it with a new one and reconnecting it.
3. Check the receiving card and sending card:
- If you are using the display screen controlled by the sending card and receiving card, check whether the sending card and receiving card are working properly.
- You can try to re-insert the sending card and receiving card, or replace the card with a new one for testing.
4. Check the unit board:
- Check whether the unit board related to the undisplayable area is functioning properly.
- You can use a multimeter and other tools to detect the voltage, resistance and other parameters of the unit board to see if there are any abnormalities.
5. Check the LED lamp beads:
- If the unit board is normal but the LED lamp bead does not light up, there may be a problem with the LED lamp bead itself.
- You can try to replace the LED lamp beads with new ones for testing.
6. Check software settings:
- Check that the control software is set up correctly and there are no wrong or missing parameters.
- Try reloading or updating the control software to see if that resolves the issue.
7. Seek professional help:
- If the above steps cannot solve the problem, it is recommended to contact professional LED display maintenance personnel or manufacturers for inspection and repair.
Please note that during inspection and maintenance, safety must be ensured to avoid electric shock or other accidents. At the same time, if the fault of the display screen is serious or important parts need to be replaced, it is recommended to contact professional maintenance personnel for operation.