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OK this is a strange one. I have an iPad 4 wifi +3G which i’m refurbing. I have transferred the Motherboard battery & other parts across to a different casing which is in excellent condition. The casing from original was pretty beat up & very badly damaged in one of the corners but everything on it worked fine including both camera’s. This is something i have done many times before without any issues so i’m not someone who is attempting this for the first time. Everything is working fine except for the main camera when i try to use the camera app it just stays black & i can’t switch cameras to the front facing one. Also i cannot get a camera to work with photo booth BUT both camera’s work fine when using FaceTime !!!!??? I have tried different headphone jack logic boards both brand new & from known working iPads I’ve also tried different camera’s again new & from working iPads yes they work fine when put back into the iPads they came from. I have DFU restored & updated to IOS 8.1.1. Any ideas guys any help or suggestions greatly appreciated. Thank you.
Same thing happened after taking iPad to store to fix jammed earphone jack!!