iPad Says charging but battery doesnt increase

As the title states I have an ipad that says it is charging when plugged in, however the battery does not increase and actually goes down. I have obviously tried many different (original 10W) chargers and cables to no avail. Also I have tried numerous batteries and charging port flex cables. I am fairly convinced this is a board level issue and am hoping it is not as serious as a power management IC...I am hoping that it is a a resistor or capacitor that has blown. I am having trouble finding any information as far as the charging circuit goes...hoping that one of the real geniuses on here may be able to shed some light on the subject. Any help would be appreciated.



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