Thanks for your reply! But I check that USB cable is fine and computer is on.Because I just bought this recently. At first I just connect this board to computer via USB，and it works. After I connect this board with another board，BBB also connect computer，another connect 24V supply. BBB not working，all LED not work. Is there any chance another board broken,so the high voltage go through to the BBB cause it not working properly?
Dennis Lee Bieber於 2016年8月6日星期六 UTC+8下午11時32分27秒寫道： > > On Sat, 6 Aug 2016 04:34:35 -0700 (PDT), ??? > <[email protected] <javascript:>> declaimed the > following: > > > > >Hi > >I plug my BBB via USB port with computer. > >BBB power LED is not work &user LED are all also not work. > >What may it happened? > >Thanks > > 1) bad USB cable > 2) bad USB port on computer (is the computer turned on? it is rare > for a > USB port to have power without the computer being alive) > 3) bad USB jack on BBB > 4) fried power controller chip on BBB > -- > Wulfraed Dennis Lee Bieber AF6VN > [email protected] <javascript:> HTTP://wlfraed.home.netcom.com/ > > -- 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/aa2e338c-1d42-4b64-9999-dbc5df12c4db%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
