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Aporte original por: Duane ,


You ideally need to remove the emi shields, if it's got damp, components are most likely to have corroded.

If you can't get the shields off, Litterally put the board in a bath of isopropyl, then leave to fully dry.

Then, use a new battery, and unplug everything on the board except the lcd, power flex & battery and see if it boots up,  if so, plug in another component one by one until the fault occurs again (if any) which may indicate that part.

Also, don't forget to clean the female connectors not just what's on the board.

Also, iTunes errors can also be caused by non genuine leads, I've had this before, and a decent/genuine cable worked.

Good luck