Chosen Solution
Hello I repaired a clients iPad 7 and it came back back with in 2 days with “rapid battery drain” Pre and post repair I checked that the battery charged at least 5%. I did confirm that after getting the iPad back that it will loose 100% charge over night in stand by. I checked the battery on 3u tools and it said 87% capacity / life. I replaced the battery any ways as 3u isn’t always correct and the “new” battery (taken from a donor iPad) was 95% Same issue I tested with an original screen (one i removed with out breaking) with the same issue. Home button flex is all original The full restore and update was done with the same issue Any idea’s? Note - I can’t prove / disprove the iPad wasn’t doing this before I received it for repair as I only ever make sure it charges at least 5% as prev mentioned Thanks
You will need to take some diode readings as it sounds like you have a partial short. Check PPVCC_MAIN and PPBATT_VCC and compare with a known good board. If you have a thermal cam it might pick up the faulty component.
