Canon PowerShot S400 pc1038 digital camera and its back cover disassembly. How to clean the viewfinder inside and how the display is screwed onto the flex cable, for possible replacement of a damaged LCD. Canon PowerShot S400 pc1038 can only be disassembled by a service center or an experienced person, it contains a capacitor that can be charged. See the rear disassembly of this Canon PowerShot S400 pc1038 luxury digital camera.