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 <ger...@beagleboard.org> 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, <mdtsand...@gmail.com> 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, 1127...@gmail.com 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 beagleboard+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Gerald > > ger...@beagleboard.org > 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 > beagleboard+unsubscr...@googlegroups.com. > 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. For more options, visit https://groups.google.com/d/optout.
