And one of my clients just purchased two batteries from one of those companies before asking me what the problem was...turned out he had turned the contrast all the way down, so he actually has no problem, and two extra batteries. Email me if you want me to put him in contact with you.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw