I found this advisory from Olympus posted on another board. Have you had this problem?
"In picture taking mode, the camera will produce pictures that are of a gray or
purple tone or the pictures will be completely black. If the LCD monitor (or
the C-730UZ electronic viewfinder) is used to compose the picture, the
preview display will also be dark."
http://www.olympusamerica.com/files/C5050C730Advisory.pdf
I recently sent one of my 5050's in for just this type of repair. Hopefully I can get a refund.
"In picture taking mode, the camera will produce pictures that are of a gray or
purple tone or the pictures will be completely black. If the LCD monitor (or
the C-730UZ electronic viewfinder) is used to compose the picture, the
preview display will also be dark."
http://www.olympusamerica.com/files/C5050C730Advisory.pdf
I recently sent one of my 5050's in for just this type of repair. Hopefully I can get a refund.