What is the reason for the navigation screen going black but still having sound?
2 Answers
The reasons for the navigation screen going black but still having sound are: 1. The power plug of the navigation display is loose; 2. The touch screen is damaged. If the touch screen is functioning normally, then check the internal display screen for issues, inspect the touch circuit, and confirm whether there are any problems with the wiring. If no issues are found, consider whether the decoding chip or core module is not working or is damaged. Car navigation systems feature GPS global satellite positioning functionality, allowing drivers to input their destination into the system. The system will then automatically calculate the optimal route based on electronic maps and provide prompts (such as before turns) to guide the driver along the calculated route. The car GPS navigation system consists of two parts: one part includes the GPS receiver and display device installed in the car; the other part is the computer control center. These two parts communicate via positioning satellites.
The issue of the navigation screen going black but still having sound has occurred to me a few times, and I think it might be related to screen hardware failure. For example, the backlight of the screen might be broken or the LCD panel might be damaged, causing no signal output from the display part while the audio module continues to work independently, hence the sound still plays. Software conflicts could also lead to this situation, such as a failed system update or a program freeze, leaving only the sound function operational. Additionally, loose cable connections are a common cause; bumpy rides can easily dislodge the display screen plug, so it's advisable to first check if the screen's wiring is securely connected. Try restarting the car to see if it can restore functionality. If not, it's safer to have it inspected at a professional shop, as this issue might affect real-time viewing of road conditions while driving. Over long-term use, the navigation system ages, especially in older vehicles where the screen is more prone to problems. Regular cleaning of cabin dust can help reduce such failures.
