Go 520 sun problem

WillieOne Registered Users Posts: 10
Master Traveler
I have a GO 520 that was acting wonky but I was able to get it going again by holding the power button down for a good while. I am still having problems seeing the screen in the glare of the sun. My question is, has anybody made a devise that actually makes the screen viewable on a very sunny day? This has been a problem for me since day one. Thanks!