F-- When I try to take a picture, it wont take, and F-- keeps blinking. What does that mean?

Unlike other cameras that start at frame #1 after loading and count up as the film is used, the N55 advance the film to the last frame during the loading process. When loading is complete, the frame counter stops at the number of available frames on the roll (usually 24 or 36) and counts down as photos are taken. I know it sounds backwards but it actually makes a lot of sense to engineer it this way. After the last photo is taken (displays 1 on the counter), the camera automatically winds the end of the film into the cassette and the counter shows a blinking E. I am assuming that that is what is being displayed and not a blinking F. it it is an F, perhaps there is a problem with the LCD display? If so, it probably isn't worth having it repaired.