Have you tried booting from an SD card? On Wed, Feb 25, 2015, 17:38 null <[email protected]> wrote:
> My Rev C BBB purchased from Adafruit just died on my in the exact same > way. I can't get it to boot at all whether connected to USB or 5V power > supply. > > > > On Wednesday, February 25, 2015 at 2:02:07 PM UTC-5, Mike Traynor wrote: > >> Thx. Will try another PS if I can find one. Otherwise will have to >> stick with USB for now. M. >> > On Wed, Feb 25, 2015 at 9:07 AM, Gerald Coley <[email protected]> >> wrote: >> > I have seen this before. The USB path and 5VDC paths are different through >>> the PMIC. It is possible that the PMIC has sustained some damage or it >>> could be the 5VDC power supply is not powering up properly, where it has a >>> voltage spike, causing the PMIC to shutdown. >>> >>> Past performance of power supplies is no guarantee of future >>> performance. It could be right on the edge. >>> >>> Gerald >>> >> On Wed, Feb 25, 2015 at 10:27 AM, <[email protected]> wrote: >>> >> 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. >>>> >>> >>> >>> >>> -- >>> Gerald >>> >>> [email protected] >>> http://beagleboard.org/ >>> http://circuitco.com/support/ >>> >> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "BeagleBoard" group. >>> To unsubscribe from this topic, visit https://groups.google.com/d/ >>> topic/beagleboard/jBFshjlPeHI/unsubscribe. >>> >> To unsubscribe from this group and all its topics, send an email to >>> [email protected]. >>> >> >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- 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.
