Overvoltage protection fuse existant?
I received the weirdest case I can think of, someone managed to plug their phone into a 110vac socket with no dc converter. After that, with minimal experience, they proceeded to take apart the phone and forgot some parts when they gave it to me. It does not work. The parts forgotten are not the issue, I am wondering if and where a fuse or other overvoltage protection is(battery, mainboard, charging assembly)? I don't want to spend money on parts I won't use or get paid for if it isn't worth diagnosing/repairing.
Thanks for your help everyone
p.s. what is the strangest repair you have done, I am curious?