What are the reasons for a dash cam not turning on?

[OWalker]

Reasons for a dash cam not turning on are introduced as follows: Battery depletion or damage: If the dash cam can turn on using an external power source, such as power from the cigarette lighter socket or a mobile phone charger connected to the mains, then it can be determined that the built-in battery of the dash cam is damaged or the voltage is too low, causing it not to turn on. Power supply circuit failure: There is a break in the power supply circuit on the dash cam's motherboard, preventing normal power supply. Since the working environment of the dash cam is generally at high temperatures, it should be considered whether the components on the circuit board are poorly soldered.

[Erica]

I remember last time the dash cam didn't turn on, and after checking, I found several main reasons. First is the power issue, where the cigarette lighter or USB port isn't supplying power or is loose; gently unplugging and replugging the cable or testing with a different adapter can confirm this. Second is a blown fuse; the relevant fuse, hidden in the box under the dashboard, if blown, will cut off the power. Third is the device's own malfunction, such as an aging battery that won't hold a charge, especially after being stored in high summer temperatures; try charging it for half an hour before turning it on. Fourth is a faulty card slot or SD card; if the card is full or formatted incorrectly, the device won't start; remove the card and restart to check. Fifth is a firmware issue; older versions may have bugs causing crashes; regularly download and install updates from the official website. I also learned some simple solutions: always carry a spare cable, start the car and observe the indicator light—if it lights up green normally, it's easier to rule out issues. These troubleshooting steps are quite important to avoid being unable to capture evidence in case of an accident on the road.

[Peter]

Hey, my car dash cam suddenly wouldn't turn on this week, so I figured out the common causes. First is connection issues - the cigarette lighter plug might have poor contact or be misaligned, cutting off power; try pushing it in firmly or cleaning the port with a damp cloth. Second is cable damage - long-term bending can cause cracks and break the current flow; check if the wire has any visible cracks. Third is depleted device battery - if it won't start after power loss, try charging it for a while. Then there might be messed-up settings from accidentally pressing the power button; force restart by holding it for 5 seconds or reset to factory settings. Another easily overlooked issue is freezing - too many files on the SD card can cause crashes; try formatting or replacing the card. My suggestion is to develop a habit: glance at the indicator light before each drive to see if it's on - small adjustments prevent big troubles.

[JesseLee]

As someone who enjoys tinkering with car accessories, I've found that the reasons for dashcams not powering on often lie in maintenance issues. Loose connections due to aging wiring are common—check if plugs are securely inserted. Built-in batteries may fail after degradation, so remember to inspect and replace them every two years. Software glitches are another major cause; updating firmware or using recovery mode can help. Temperature plays a significant role: devices may shut down automatically when overheated to protect themselves, so avoid direct sunlight exposure. Full or corrupted storage cards can prevent startup—simply clear files or replace the card. Regular cleaning of ports to prevent dust buildup can significantly reduce problems.