I have a fishmark 320 and have only owned it for a few months, until now it has preformed great. The bottom left hand corner has gone completely off, nothing on the screen will show up at all. I dont leave it outside in the sun, or in a hot truck, it hasn't been dropped, or any thing else like that to hamper the proformance of the unit. I was wondering if any of y'all have had any problems like this and if so what did you do about it?

Thanks in advance

Big