I have powershot s50 and it has been great so far. In the past few weeks the LCD monitor seems to have been playing up - often staying black when I switch on the camera before eventually reverting to the regular image. Though I can always see the image through the viewfinder. This has been most marked in bright sunlight or indoors. Today the LCD monitor has stayed blac and I cannot get an image. Should I just call it a day and take it back to the dealer or Canon or am I missing something really basic ? Any thoughts would be reallly appreciated