I own a N75 and the last three rolls of film I have had developed have come back blank.
The only thing I have done different was to replace the batteries. I recheck tonight and they are in correctly.
When I load the film it seems to feed right and advance the film to exposure 24,, and after taking each picture the film shows that it goes to the lower number, after finish roll, it rewinds and shows empty.
Any help from you would be appreciated