I received two days ago an ExplorerHAT Pro. I installed it today and run test.py. I realized that the blue LED was on during the first try of the loop but in the next ones it was off or was blinking with low intensity. I checked the program to see if there is a kind of intensity regulation on test.py, after no seeing it I decided to write a simple program to turn on all the lights during one minute.
After a few seconds (can measure, if needed) blue LED was off, and started blinking with low intensity.
I am using a, I think properly soldered, Black Hack3r HAT to connect it so I changed the HAT to other pin row and the same happened.
Any idea? Thank you!