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Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White. This page aims to help users troubleshoot, fix, and seek help for the iPhone 4.

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iPhone 4 won't turn on (old and new mobo)

I was fixing an iPhone 4 and i think i damaged the motherboard (shorted it). The thing didn't blink afterwards, pluged in it was only chirping (no display). I tested the battery, which worked on another iPhone, a different battery had no effect.

I got a new motherboard now and it still doesn't do anything. There isn't even any chirping.

What else can i try/change?

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Have you plugged into iTunes does it reconise it??

I would have tryed a new display before getting a motherboard

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It was actually recognized yeah (the owner tried it).

I put the old motherboard in the other case (with a shattered display) and it works nicely. So i guess it really is the screen.

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