So what is the fix for this? Is some sort of new powersupply needed? I had ordered my unit on 6/2020.
I have my DR video-out connected to my dash and on at few occasions (first time I noticed was right after an accident!) I noticed that the video displayed from the cameras is being shown but the flashing red recoding light on the screen is missing and the date/time on the video doesn't update, meaning that something is frozen and there is no recording in progress. Worse, the button/microphone dongle is still flashing red, misleading the true status of the recording. Only fix is to press the reset button the unit. I rotate my SD cards so it doesn't seem to be specific to a problematic card.
So if someone is not able to view the screen to check for the red light or the date/time and since the button/microphone dongle is not reliable in indicating actual recording, then the only way to know it's working is to listen for the startup chime. And if it stops recording mid-drive, there is no way to tell.