Chosen Solution
Hello, A customer has brought me an iPhone 5C for power issues. Upon opening the iPhone I can see that the screen has been previously replaced. Phone appears to be clear of water damage. The phone reboots every 2-4 minutes, either plugged in or not plugged into a charger. Replacing the battery makes no difference and restoring the phone through a DFU does not fix the issue. I have managed to locate some board schematics but have not a clue which area and chips to look at. Hope you can help. Thank you kindly.
Bad battery or missing filter near battery connector
The Filter you are looking for is FL11 and is extremely small. I’ve attached a picture with the filter circled in red.
check for any components knocked off around the battery connector. unplug battery and charging port to inspect. microscope is recommended
