Released on September 19, 2014, this 5.5" screen iPhone is the larger version of the iPhone 6.

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Powers on only with power button held in.

A customer got an iphone 6 plus screen replaced by me 2 months ago. He got some liquid on the phone with his otterbox on the phone. There isn't any sign of the motherboard being wet. However the bottom half of his screen did not touch. So I start replacing the old screen that got water on it with a new screen. I plug it in and the apple logo comes up and then turns off, but the phone doesn't turn off it just goes to a black screen that looks like it is off. However, here is the weird part. The apple logo goes to that black screen as soon as I release the power button, if I hold it for 1 second that is when the black screen will come on. If I hold it for 4 seconds that is when the black screen will come on. The phone will not get passed the apple logo though.

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try disconnecting the power button ribbon and prompt to boot with the charger, also try a new battery

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Thank you for the repsonse, when I boot from charger without battery it just flashes the apple logo then goes to the black screen. A new battery does the same thing :(

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disconnent the power button and try iv had boot problems with it and volume buttons even disconnect volume aswell

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Still doing the same things :(

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Thank you for your continued help!

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I suspect some water got inside the phone; the coincidence is just too great. You need to remove the logic board and take a closer look. If you have access to the schematics and are comfortable probing the board, start checking the main voltages (PP_BATT_VCC, PP_VCC_MAIN & PP5V0_USB to see if there are any shorts or if they are receiving the proper voltages.

Otherwise, consider sending this to a micro-solderer for troubleshooting.

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