Identical problem this morning: BBB boots fine when powered by USB, but not when powered by a 2.0 mA rated 5.0 V DC power supply (nicked from some other device). BBB power LED blinks continuously. This power supply has worked with this BBB in the past.
Mike. On Friday, January 23, 2015 at 8:44:59 PM UTC-8, [email protected] wrote: > > I had a similar problem- my power LED would just continue blinking when > connected to a 5V power source. This meant there was something wrong. > First, I checked if my BBB was still alive. To find that, I connected my > board to a computer via USB. Surprisingly, this time power LED turned on > normally. Then to make sure that everything was properly, I ran some > program as given in the BB website http://beagleboard.org/getting-started. > I was happy to see, the programs on the website worked just fine on my > board. Thus, I was able to conclude that strangely, my BBB board didn't > like 5V external power source! > > On Friday, November 22, 2013 at 6:41:41 AM UTC-8, Bert Lindner wrote: >> >> >> Just had a 5V powered Beaglebone Black seemingly die on me. First the >> power led kept blinking, then after removing the (BB Toys CAN) cape the >> power led would flash just once after applying power. Looking back in >> previous threads this seemed to mean I killed the board somehow; there was >> also a GPS module attached to one of the UARTs and a probably power hungry >> USB wlan stick that I'm trying to get to work, so a power hungry setup. >> >> I was ready to declare it dead, it remained just flashing once after >> repeatedly unplugging and reattaching the power supply. >> >> However I noticed the single power led flash would also happen if I >> pressed the power button (leaving the 5V plug in). Doing that repeatedly >> seems to have revived the board, will see if new problems occur. For now it >> behaves normally. >> >> Is this expected behaviour? >> >> Best, >> >> -Bert >> >> -- 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]. For more options, visit https://groups.google.com/d/optout.
