Bootloop after replacing screen,battery and lightning dock.
Hey everyone. My friend gave me his iPhone 6 plus too fix the screen and the boot loop issue. I have replaced the screen. I then replaced the battery which didn't fix the issue. It restores fine and then stays on for an hour but will then boot loop again. So I replaced the lightning/headphone jack flex and still the same situation. Tried another new plus battery I had spare and the same outcome so I know its not the battery. Checked over everything 2,3,4 times etc. Could it be the power IC chip?
Thanks