This is repair video we will go over why the ipad mini 4 power button stopped working after screen replacement. If you pres and hold the power button it works, otherwise if you press once to turn the ipad mini 4 on or off, it doesn’t work. The sleep wake sensor is the cause of the problem. The sleep wake sensor must be desoldered off the old screen and soldered back on the new ipad mini 4 screen. By doing that, the power button will work again as you see in this repair video.

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