What Causes a Car Navigation Screen to Go Black While Still Producing Sound?

[DelReed]

The reasons for a car navigation screen going black while still producing sound include: 1. Damage to the LCD screen; 2. Failure of the display backlight driving circuit; 3. Malfunction of the LCD display driver or wiring issues; 4. Damage to the core module; 5. Software failure or human error. More details are as follows: 1. Switch to a familiar interface and tap the touchscreen to see if it responds. If the touch function works normally, then the issue lies with the display screen itself. 2. If the touch function is not working, first suspect a faulty touchscreen and replace it if necessary. Then check the touch circuit to ensure there are no wiring issues. Generally, if these steps don't resolve the issue, it could be due to the decoding chip or core module not functioning or being damaged. 3. Determine if the issue was caused by an update: Sometimes, after an update, navigation devices may encounter problems, mainly because the original device does not fully support the new software. In such cases, it is necessary to contact the manufacturer promptly to replace the navigation device body for a solution. 4. If the above situations occur, it is recommended to visit a 4S repair shop for inspection and repair or replacement.