+5V Data Data NC/internal data available used line Ground (looking from the back of the port with the motherboard off) Having sent home over 500+ (yes that's right 500 plus) Kindles with USB charging problems, I have found many customers who have wiggled the port so hard that pin 5 (+5V) if you count from the back of the USB port Would highly advise to have the port professionally repaired! Having fixed many Kindles lately, I am seeing charger issues, and plugging and replugging the USB cable in cause 50% of broken USB port problems. If charger is not working, power down kindle and try: Thin charger cables are conduits of squished electron flow and will not “shift into gear” the Kindle into charging mode. If using USB to USB micro data cable make sure it is a thick wire cable that can push out the current from charger to kindle. Many chargers are over rated and many have cheap thin wire that cannot deliver enough amperage to the kindle port and it will not "shift" into charge mode.Ī Kindle will pull about 700mA from a charger, and the charger rating printing is mostly marketing and most of them do not deliver that wattage on a constant sustained level. iPad 2 chargers, 2.0 or 2.1 amp rating, with USB ports can be used with appropriate USB micro charging cables to work really well. While the Kindle Fire calls out for a 1.8 amp charger, I would recommend a 2.0 amp charger for the Kindle. It requires a ‘hefty’ charger to charge it and keep it healthy. Most of the inside of your Kindle is a huge battery. I have been repairing Kindle USB ports for a few weeks and have some suggestions about the chargers being used:
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