You are correct I had it in my 520 box and just was on auto pilot . It is a 810.that looks more like an 800?
The battery is good and still last but I think it is the bottom left of the screen that allows you to go back that is faulty, this has also affected the sound.What's the fault on the screen and what's the battery like?
you have a pmOK thats fine i will take that so somebody gets some use out of it.