Is there a way to test the motherboard is working?

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iPhone 3G

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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Leo @leo53960

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Posted: Apr 2, 2014

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Is there a way to test the motherboard is working?

I've got a faulty iPhone 3G which doesn't turn on or anything, has cracked up screen. Before buying a new LCD I want to be sure the motherboard isn't broken, is there a way to know? The only thing I've had is a noise from the iphone when connecting it to a PC.

I've also powered it from a 4.1v LiPo cell because the battery inside wasn't working, hoping that's ok? (a bit confusing as there are 4 contacts)

Thank you very much

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Sophia @sophia84381 Rep: 43.8k 64 44 41 · Answer 1 · 2014-04-02T20:19:48-07:00

Sophia @sophia84381

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If you know someone who have a iPhone 3G or some repair shops would like do a favor, there is a easy way to check. Exchange your display and rear case assembly respectively with another working well iPhone 3G, and can make sure which part of the phone have problem.

Good luck to you!

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oldturkey03 @oldturkey03 Rep: 781k 1.1k 891 2.3k · Answer 2 · 2014-04-02T20:54:30-07:00

oldturkey03 @oldturkey03

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Leo,for a brief connection use the outermost contacts. "a noise from the iPhone when connecting it to a PC." is a good thing. At least your computer recognized it. I would see if iTunes recognizes it. Yes, it may just need a new LCD but there is a lot of other things that could be wrong with it. It's a bit of a crapshoot. Hope this helps, good luck.