What are the reasons for the dashboard camera screen not lighting up?
3 Answers
The reasons for the dashboard camera screen not lighting up are: 1. Poor power contact; 2. Damaged or broken wiring. The functions of a dashboard camera are: 1. It can record video images and sound throughout the entire driving process; 2. It can serve as parking surveillance; 3. It can provide footage to assist in handling accidents. The usage method of a dashboard camera is: 1. Insert the memory card and press the power button to turn it on; 2. Press the mode button to select among three modes: video recording, photo taking, and preview; 3. Selecting the video recording mode will automatically start recording; 4. In photo taking mode, press the confirm button to take photos; 5. In preview mode, you can view videos and photos in the memory card, press the OK button to play or pause, and press the ESC button to exit.
During my last road trip, the dash cam screen suddenly went black, which was quite worrying since driving in an unfamiliar place without a recorder felt unsafe. Later, I found out it was mainly a power issue, like a loose cigarette lighter adapter or an aging car charger cutting off. Testing with a spare phone charging cable can quickly determine if it's a charger problem. Sometimes, the dash cam overheats from prolonged use and automatically shuts down the screen as protection—unplugging the power and letting it cool before restarting usually fixes it. Also, a full or corrupted memory card can cause the screen to freeze, so regularly clearing archived files is crucial. I've since developed a habit of checking plug connections and storage space before long trips, and keeping a spare data cable in the car has been incredibly useful.
I found that when the dash cam screen doesn't light up, it's mostly due to issues in the hardware fault chain. First is the power supply link - if the 12V to 5V step-down module fails, there will be no response at all. You can check if the device has any working indicator lights. System firmware crashes are also very common; holding the reset button for 15 seconds can force a reboot, similar to dealing with a frozen phone. The issue of a loose screen ribbon cable is more subtle and requires disassembling the device to check for oxidation at the connection port. Poor-quality memory cards can cause repeated read/write failures - try switching to a Class 10 high-speed card. I've personally modified an old dash cam by adding a heat sink, which significantly reduced overheating crashes. Regular maintenance is crucial for electronic devices like these.
