On Friday, January 31, 2014 4:34:51 AM UTC+11, Brad Andersen wrote:
>
> An update:
>
> For the A6 (Beaglebone Black) version, I connected U4 pin 1 (enable) back 
> to VDD_3V3AUX (same as A5C).  It now shuts down correctly while on 
> battery.  This was verified on two A6 BBB.
>
> The mystery is what causes the VDD_3V3A to hang up on the A6 version when 
> shutting down while on battery.
>

Brad,

Thank you for this post. I thought I was going madder than usual when the 
production units wouldn't turn off but the prototypes did!

all it required was lifting pin 1 of U4 and soldering a wire-wrap wire to 
the power led anode (side furthest from the edge of the board)

you have as they say "saved my bacon"

Best Wishes,

Darren

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