Ok, experimented with it some more and came up with a basic protocol for getting it to boot. What you do is you kind of fiddle with the power button and keep plugging and unplugging the USB cable (I'm powering my BBB through the miniusb to my Windows 10 desktop).
**** What you do is you ground yourself every time by touching the metal on the USB or ethernet connector. I've come close to frying my board a few times (its cold here and I have nice carpet). You will eventually fry it if you don't. *** Then I take a precision screwdriver or insulated probe and I keep depressing the power switch gently with long and short intervals. If it works, the flashing power indicator goes strong on and it starts to boot. If this doesn't work you disconnect your USB cable and reconnect it. A few cycles of this and it reboots every time. On Thursday, January 26, 2017 at 1:29:54 PM UTC-7, Justin Pearson wrote: > > I'm using my Beaglebone Black to drive a DC motor and read a rotary > encoder: > > > https://github.com/justinpearson/Beaglebone-motor-from-command-line/blob/master/Images/lil-motor-setup.jpg > > Last night when I rebooted my BBB, it shut down but didn't reboot: None of > the 4 blue LEDs lit, although the blue LED by the 5V power plug did light > up when I plugged it in. > > This behavior persisted across several plug/unplug cycles of the 5V power > adapter. I was afraid I bricked my BBB. > > In desperation, I unplugged all the I/O (P8_33,34,35, P9_29,30,31). Then I > plugged in the 5V power and it booted! > > Any idea why that happened, or how I could fix it in the future without > unplugging all my I/O? > > Thanks, > Justin > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/bc99cc2c-e84b-42ae-a505-e7222958e19b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
