Incanto sirius

problem is I descaled the machine and since then the
machine will only work if you let it stand for a few hours
and then try, you can hold your finger on the on button
and rub it and maybe it will switch on when it turns on
it warms the water ok then you try to select the coffee
cup and you have the same problem hold the button and
move your finger around and maybe it might go,other
times there's no problem with machine it has an interment