Nikon VN-320.We purchased the above video camera recorder new and had previously enjoyed it. It hasn't been used in a number of years. Now that we wish to start using it again, we have a problem: There is a vertical white stripe seen through the viewfinder and we aren't able to record or see any previously recorded videos as the vertical white line is all that is seen. I read the owners manual again but am at a lose. Am I over looking something?