Also , if i clean the charging contacts, it sometimes will complete the charge. I’ve tried a new charging cable but no...

Check the voltages on the FRC module’s 1117 regulator. (the regulator is the three legged device just up and to the left of the big IC) The reading should be from top to bottom with respect to chassis ground. .6v 1.8v 3.3v If t=he bottom number is not right, either the Main board is bad or check all the power supply voltages.