Chosen Solution
hi i have an iphone 6 its not charging, ihave checked u1401 and found there caps under it C1412,C1416,C1480 is shorting i have removed those but after i probe them again still its shorting on their line. but now charging voltage from battery terminal is variable like 0-4v changing per second previosly its like dead when usb plugged what can be happend i am suspicious that i am damaged u1401 chip. or where should i check other then those 3 caps. btw vcc main of phone is not shorted. only vbat is shorted (i havent replaced new caps after removal)
C1412/C1416/C1480 is on the PP_BATT_VCC line. However, there are a lot more caps on that line than just those three. You will have to search through the schematic to find all of them and you will want to test them all. Of course, the problem could also be within Tigris itself so you’ll have to decide if you remove that first or last.
