What Causes the Car Navigation Screen to Go Black and Fail to Power On?

[DeVivienne]

Introduction to causes of car navigation screen blackout: Loose power voltage or cable faults, insufficient power supply can lead to the navigation device screen going black. Additionally, severe battery depletion may also cause the display to automatically shut off and turn black. The following are solution measures: 1. Completely black screen and failure to power on: a. Check if the car fuse has blown; if the fuse is blown, replace it. Check if the navigation buttons are stuck, including the RSET button, as stuck buttons can also prevent power-on. b. If the screen remains black and fails to power on, use a multimeter to measure whether the B+ and ACC voltages are normal (12V). 2. Black screen but sound functions normally: a. Tap the touchscreen to see if there is any touch response. b. If touch functions normally, then focus on the display screen issue. c. If touch does not function normally, inspect the touch circuit; generally, it may be due to the decoder chip or core module not working or being damaged.