--cannot view anything to take a picture of--the view screen is black but I can see al menu items and can display settings. Flash works. I can see cannon signal clearly when camera is turned on. I am not sure if pictures are being taken. I had a few older pictures that were perfectly viewable. I deleted them so I could check to see if pics were being taken. No new pics have shown although I can see a little grayish noise around the edges of the view screen.

The A6XX series is prone to stuck shutter problems, particularly if the camera isn't used very often. Lens lubricating grease can coagulate on the shutter, immobilizing it. The symptoms of a stuck or "sticky" shutter are very similar to CCD image sensor failure. The camera may take black pictures (for shutter stuck closed), or the pictures may be very bright and overexposed, sometimes with lines, especially when taken outdoors (for shutter stuck open). To confirm a stuck shutter, put the camera in any mode other than "Auto", and turn the flash OFF (you don't want to blind yourself for the next step). Next look down the lens and take a picture. You should see a tiny flicker in the center of the lens as the shutter opens and closes. If no movement is seen, then you likely have a stuck shutter. If so, please see this link for further info and a simple fix that may help.