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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: Black Screen and "bong" Tone/Noise

I tried to follow the tutorial to repair my iPhone 4's home button. Unfortunately the process was a failure because I am now experiencing a black screen and a never ending "bong" noise when plugged into a wall outlet.

Can anyone help/provide insight as to what's happened to it and if you think I can fix this, or should I just junk it for parts/repair on ebay? I don't know if this means the logic board has failed...

https://www.youtube.com/watch?v=BR9B-Fye...

Edit: I gave up. I took the whole thing apart and and tried to reassemble and the same thing occurrs. Not worth fixing this phone ($40 for a display really?) so I will be putting it on ebay for parts or repair.

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Open back up and make sure the screen connecrors are fully pressed down and seeded correctly if still the same after that you will need to try a new screen.

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Thanks for your response. They are definitely seated correctly - I've reseated them a few times now trying to resolve this (probably only making my chances of getting this to work even worse). So do you think that I destroyed the LCD screen cable? I was pretty careful while I did it and there is no visible damage ie like a cut or hanging cable, so I'm pretty disappointed...

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Try to do a hard reset on the phone... holding home button and power button at the same time.

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Didn't work, unfortunately.

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