I need help and would be grateful for any help to understand what happened with a unit of my BBB wireless. I'm not looking for RMA, but only to understand what might have caused the board to burn.
It happened the following:
The board was plugged into an LCD and connected to a 5V - 2A power supply (it came from an IT kit with an am335x) and also connected with a USB cable on my Macbook;
I had been using this board with no problem, and last night I execute a halt on the command line and went to sleep. In the morning I instead of unplugging the USB cable I just turned off the power supplying the 5V source and forgot to disconnect the USB cable, so I stayed for some time connected only by the USB port, but as I was in halt and nothing happened, so I turned on the 5V source again and then the board did not call anymore.
I had plans to create a custom version of the board with a onboard LCD input, a DAC and a few more components, but I'm scared to now. I'm in the middle of a very big project, i do not know what direction I should take now. I'm afraid to continue with the platform as the basis for my project.
I do not know if there was a problem in the power source during the night, I'm very worried because the board just short circuit without using it, I'd be very happy if I knew I did something wrong, but it's not the case.
I would also like recommendations to project a Surge Protection Device. Any help is welcome.
Thanks in advance!