Catastrophic Failure ( was unexpected failure)

Yesterday I posted the following note:

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Jan 6 (14 hours ago)

I just got a new BeagleBone Black and have flashed Debian 7.9 successfully. I was connected with USB to a Mac running OSX 10.10.5 Yosemite. I was using a 5v 2A power adapter and a TP-Link TL-WN722N wifi adapter. I used both with another BBB for about a year with no problems. I was in the process of adding the Adafruit wifi-reset script to the startup services when the BeagleBone died. Nothing else was connected.

Now whenever I try to boot the system, there is a single momentary flash of of the power light and thats it.

Is this likely just bad luck on my part? Is anyone else having this problem?

Thank you
Fred Patrick

Defective power supplies can damage the board. Hence the big sticker on the power jack.
The DC input takes over when it is applied to the board as stated in the SRM.
Having USB and DC should not cause an issue.
I suggest you power from DC from the start. Mainly because the Wifi adapter is likely to exceed the 500mA limit of the USB power supply.

Gerald

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