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Nook Suddenly Not Charging?
If a Nook is in charge mode either on a USB connection or through the wall jack and you then power the Nook down, it leaves the charging SW in an instable state and any attempt to recharge the Nook thereafter will usually fail. You MUST do a power- down reset by one of two methods. 1) Start the Nook and when completely started up, press and hold the power button down for at LEAST 20 seconds. This should reset the charging state parameters. Start the Nook back up and plug in the charger. It should show charging with a "+" in the battery state indicator at the top of the screen and the orange light on down near the cable connector. If this falls to actually charge the battery (in spite of the indicator statuses), 2) power down the Nook, disconnect the USB cable, take the back cover off the Nook, remove the battery for at LEAST 10 seconds, reinsert it and put the cover back on, power up and plug in the charger. This should also reset the SW parameters.
If both fail, you may need to either do a factory reset of the Nook via the settings options, replace the battery with a new one, or get a replacement Nook.
Frankly, I find this to be a completely absurd HW/SW design failure. it would be easy to design the SW to not allow the HW power switch to power down the unit with the power supply still attached and supplying current through the charger.
Paul
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