Cube won't initialize

Hey all,

I have in issue with the blue cube. Now I don’t know if it’s an hardware issue or something else since this is the only board I have tested.

About 50% of the times the cube stucked in flashing orange light when power is attached and won’t initialize.
I can’t put my hand on what could be the problem since it’s could happen when the vehicle moves and when it’s not.

The firmware by the way is ArduSub latest.

Thanks ,Gal.

Update:

Is it possible that because of the multiple devices attached to the Pixhawk 2.1 carrier (GPS, Oftical Flow, Rangefinder, Receiver, Telemetry) that the voltage has gone so low (5.12-5.19V insted of 5.33V with no load) that the CPU won’t initialize?

Thanks , Gal