Hi,
            I've had my beaglebone black working for several months using 
USB power from the computer. Lately I've been using it for a project and 
switched to barrel jack DC power. Now, it only works with barrel jack DC 
power, and if I plug it into a computer, USB battery, or power supply with 
USB, it won't boot. The power LED flashes briefly and then it turns off. No 
combination of power or reset will turn it on. If I have both DC and USB 
plugged in, then it works fine and USB networking works, etc. Has anyone 
seen this? Did I blow a fuse or something?
            I was planning on using a USB 5V battery for a project. I guess 
as a workaround I can cut the mini USB connector off and plug the wires 
into P9_1 and P9_5, which is the same as DC barrel, correct? 
            Thanks--

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