PG-1210 Service Manual6.4 Charger part6.4.1 Charging errorInsert adaptor into I/O jack.1. Check to see if F101, D101 pin is 5.2V : CP128NO Æ Check to see J101.23, 24(I/O connector) pin and F101, D118 cold solder, broken,short to the other PCB pattern or not :If you find out any defect, you replace it2. Check to see U408 No.1,2 pin is 5.2V : CP129NO Æ Check to see U408, R223, and R221 cold solder, broken, short to the other PCBpattern or notIf you find out any defect, you replace itCP128CP129CP12835PANTECH