Hi Guys here is the latest on the white screen. Saturday i went fishing I took pic of the screen, they are still in the boat. but a buddy of mine has a 587 just like mine so we pulled up side by side switched the 587 heads mine on his, his on mine. Mine worked like it was supposed to on his boat. His done the same white screen on my boat. It has to be in the transducer.Will be sending it to Humminbird sometime this week. Thanks Guys for the help Cub48