My son is facing an issue with his Mindstorms EV3. Every time he turns it on a low battery alarm is displayed and it shut downs.
This happens regardless of the batteries, we have tried 12 different rechargeable batteries and 6 brand new alkaline batteries.
Also, I noticed it takes a lot to start up, I don't remember it being so slow before.
The sequence is something like:
- Starting up: it takes 26 seconds
- Green light: it is on for 2.5 seconds
- Orange light with low battery alarm: it is on for 8 seconds
- Shut down: then it shuts down and it takes 20 seconds to complete
I have tried disconnecting every cable, and even opened it up and disconnected the display flex cable, but still the same behaviour. I have double checked the button in the battery compartment to make sure it is not stuck or anything similar, to avoid the brick thinking the Lego battery pack is in place.
Given that it stays on for such a short time frame, I am not able to update the firmware.
I have seen similar posts but none with a solution other than returning the brick to Lego, which is not an option to us given it is no longer under warranty.
Any clues or help?