Hey I am currently experiencing the same problem as you had. Is there a solution or should I buy a new board?
Thank you Le vendredi 19 juin 2015 22:55:43 UTC-4, Graham a écrit : > > I thought that it would work on USB, and not on external power supply. > If the situation is that you get the one blink and no boot, is the same for > both USB power and external power, then there is a hard failure of the > Beaglebone. Either a damaged power supply chip, or a short circuit > downstream from there. > > --- Graham > > On Fri, Jun 19, 2015 at 11:18 AM, Vinicius Maciel <vinic...@gmail.com > <javascript:>> wrote: > >> Hi, >> >> I do not think the problem is the power sypply. I was using the same >> power supply before the problem occurred, power supply is functioning >> normally, I use it to charge my cell phone! >> >> In this video, https://youtu.be/qojeLqazkK8, I tested two power >> supplies. The same that I have used to power up through USB connector and a >> common DC power supply. Nothing else works :( >> >> 2015-06-19 11:21 GMT-03:00 Graham <gra...@flex-radio.com <javascript:>>: >> >>> If the BBB will run from USB power, then the BBB is probably OK. >>> >>> Put an oscilloscope on the output of the power supply that is causing >>> the problem, and watch what the voltage does when you turn things on. >>> >>> I had a bench power supply (B&W 1550) that when set to 5 Volts, then the >>> output turned on, would throw a transient up to 6 Volts then return to 5 >>> Volts. (The bigger the capacitor across the load, the greater the >>> transient.) This would trip the over-voltage detect in the BBB power >>> supply, which would blink the power LED once, then off after that. >>> >>> So, make sure the power supply is working properly. Some of the cheap >>> power supplies out there will NOT run a BBB. >>> >>> --- Graham >>> >>> == >>> >>> On Thursday, June 18, 2015 at 7:27:54 PM UTC-5, Gerald wrote: >>>> >>>> Sounds like an overvoltage condition on the 5V DC input may have >>>> damaged the DC input. Usually from a cheap 5V power supply. If the USB >>>> power works, then the rest of the board is OK. >>>> >>>> Gerald >>>> >>>> >>>> On Thu, Jun 18, 2015 at 11:17 AM, <vinic...@gmail.com> wrote: >>>> >>>>> Hi, my Beaglebone Black have the same behavior, gives a short blink at >>>>> the power LED when powered. >>>>> But, I turned on via usb connector with power supply 5V@1A. What may >>>>> have happened? >>>>> >>>>> >>>>> Em sexta-feira, 16 de agosto de 2013 13:44:09 UTC-3, magu_ escreveu: >>>>>> >>>>>> Hi >>>>>> >>>>>> I powered the BBB over the DGND - VDD_5V. But by accident I plugged >>>>>> it into PWR_BUT. >>>>>> >>>>>> Now it only gives a short blink at the power LED when powered. I know >>>>>> this is a bad sign... But does anybody of you know if this does not mean >>>>>> the end of it and if it can be somehow reset? >>>>>> >>>>>> yours >>>>>> magu_ >>>>>> >>>>> -- >>>>> 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 beagleboard...@googlegroups.com. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> >>>> >>>> -- >>>> Gerald >>>> >>>> ger...@beagleboard.org >>>> http://beagleboard.org/ >>>> >>> -- >>> 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/ilf5jOwbgFE/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> beagleboard...@googlegroups.com <javascript:>. >>> 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 a topic in the >> Google Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/beagleboard/ilf5jOwbgFE/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> beagleboard...@googlegroups.com <javascript:>. >> 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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/7d0e0e8e-2768-4b40-b920-cf9645481bd1%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
