Chosen Solution
my iphone 7 plus has water damaged and no power or charged. I change lighting port and test other parts, power can turn on. battery seems good to charge while i test with other iphone 7 plus. logic board test on other iphone 7 plus works. i assemble all together and phone can power turn on. but can not charge( i tested with 3 new power port ) ( I connect lighting cable to charger with power off and iphone come turn on but not charging ) how i have to do this problem? thanks.
Probably power management i.c. this would require micro soldering. however you could try cleaning the logic board first with Isopropynol.
