Ran into this as well but found a few things that should help.
The issue is one of current vs resolution.
There are combinations that will work with external power and those that won’t.
To find out what resolution and frame rates work - remove the battery and plug in external power.
The camera will power up but certain resolution and frame rates will cause it to turn off.
The combinations where the camera stays on and records are the ones you can use with the battery in place but will not deplete with external power.
Note that a higher amperage external source (like 5 amps) used with the short OEM cable yields the widest range useable.
Hope this helps,
Chris
