IXUS 75 has blank LCD screen

A screen fails in one of two ways. 1.Backlight goes- If looked at closely or to one side the images are there as ghosts but not illuminiated. 2. Connector or board component has failed which could mean with a back light Okay a brilliant white screen. Failure 1 - nothing for you to do there Failure two -if it is a connector- gently flexing the camera casing in the region of the base of the screen may elicit a reconnect. In either case however- I think you will find that unless it is under warranty or insured in some way- New camera will be a more economical approach. But check out makers support site first.