no matter how sensitive your tongue maybe it is no substitute for a meter. I suggest you try a USB ammeter first and see how many amps your phone is pulling when it is charging. It does sounds like you have either an issue with the charging circuit or the battery.
+
+
Samsung had a bulletin for the charging defect:
+
+
Charging defect or no power-on for SM-J500/J700 can be caused by IF PMIC defect.
+
+
This document ==>> [document|5410] will help you with that repair
'''++@anaschahid++'''
no matter how sensitive your tongue maybe it is no substitute for a meter. I suggest you try a USB ammeter first and see how many amps your phone is pulling when it is charging. It does sounds like you have either an issue with the charging circuit or the battery.