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Q : How to troubleshoot AC series air conditioner screen with backlight but no display?
A: How to handle the situation where the air conditioner screen has backlight but shows a black display?
Troubleshooting steps:
1-Connect a computer to the screen's network port, and set the computer's IP address to the same subnet as the screen.
2-Open the command prompt on the computer and ping the screen's IP address. If you receive a reply, it means the main program is reachable; you can then proceed with upgrading the program.
3-If the ping fails, it indicates that the main program is frozen. In this case, flash (reprogram) the firmware directly. If the issue persists after flashing, the screen needs to be replaced.
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