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I attempted to replace a cracked screen on a iPhone 6 Plus but when I was putting the flex cables back on I had the last two inverted and the area where they plug into started to get really hot. I later realized what the issue was and I put the cables in the correct connectors and reassembled the phone and powered it on but now only the apple comes on and disappears and comes on again and it just keeps on doing the same thing. Can someone tell me what I damaged so I can do the fix right this time ?
This is a belated answer so hopefully it can be of use to folks who search for and find this question. Because the connectors are wired differently, you most likely shorted some components on the logic board by forcing ground on power rails. If you’re lucky, the damage may be only limited to the surrounding passive components. In a worse case scenario, the damage may have moved upstream to the backlight, LCD and Touch subsystems. This would need to be repaired via micro-soldering and is not a DIY repair.
