Second generation of iPhone. Model A1241 / 8 or 16 GB capacity / black or white plastic back. Repair is more straightforward than the first iPhone. requires screwdrivers, prying, and suction tools.

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iPhone 3G wont turn on..!

my iphone wont turn on..

my mistake was i accidentally touch the red wire and the grey wire on the usb cable while charging..cant charge anymore.. how to fix this..? whats the problem and what should i do..?

uhm.. ill be adding some details..,

it also wont turn on even i push any buttons but i charged it around half full.., no sign of lights to the iphone... i shorted the usb around the wire before the usb plug of the iphone (not the computer usb..)..

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a new logic board is the last option i would think of.

the first one is measuring the voltage of the battery - shourted batterys can "collapse" and have 0v after that - that would mean that the iphone can't boot nor charge (the iphone's battery must have around 3v to show you any sign of charging)

another possible problem could be that a fuse is shot - the iphone's charging circuit has a fuse - that could have been shot while you shorted the contacts

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and i think that the usb port can also have a fuse - so i would try if other devices work properly on that specific usb port.

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thx.., ill try that..

ill try to buy parts for it.. is it easy for it to be change/replace or needs dangerous soldering..?

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replacing the battery shouldn't be the biggest problem (you can use a guide for that) but replacing the tiny fuse - well, that involves soldering with a special soldering iron and should be done by a professional (and by that i don't think about any apple genius)

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