原帖由： Minho ,
I can’t speak for the Pro but on the iPad Air, the problem is usually with the charge port or the battery. By charging IC, I presume you are referring to the Tristar IC. However, I have not seen much success when changing that IC. When the problem persists, it is usually the PMIC. However, they are a more challenging repair and the replacement cost of a PMIC can be quite high so not all customers agree to the repair for such an old device.