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Can anyone help, I have replaced several different battery and charging port as I thought the parts might have came faulty, I have tried different combination to test as well. I have tried to unplug the battery and plug charging cable in by itself and it flashes white screen every few seconds. When the battery plugged in, there’s no charging icon when cable plugged in. Now the battery is dead, It charges to 1% in an hour or so plugged in then it drops back dead. When I plug headphone in or plug in computer it does nothing either. What could be wrong and how to fix it?
If you have ruled out dock and battery it will be a problem on the logic board. There are some small mosfets and diodes around the battery connector if one has been nudged it will cause this. If it is not a nudged component it will be one of the charging circuits IC’s Tigris or Hydra. There is not much else you can try unless you have the equipment and microsoldering skills.