well tried those .. and no go .. so unpluged the screen gave it a wipe put it back in and now those white lines are running across the screen .. so think it's knackered just ordered another from stealthvape uk .. it's one i built myself .may have caught it last month when i changed the 510 .. we live and learn .. well i'm hoping it's just the srceen no wat to test the buttons till the new one comes .. thx for the quick replies ..