Hi Ian
I did check the link you gave me and yes it involved the midi, Thank you ever so much , what happened was when Craig put in the faulty circuit board from Yamaha I was pushing buttons and unable to see the screen, Yamaha caused many problems and I know for a fact that was a faulty circuit board they sent us, I wish I had taken a picture of the screen but I was so disgusted I didnt want to, Craig took that circuit board several times to check and see if he screwed something up ,I truly thought he may of done something wrong, I was ready to have a tyros 4 funeral , I had my crying towel and all ,he said lets put the old one back in and yep a clean working screen popes up , so now we need to solve the d button sticking on the screen sometimes it dont work and the buttons work off from the circuit board we replaced , do I trust yamaha to send another bad one? and they cost over $100.00 so dont know what to do, now I know Craig is not a certified yamaha tech. he probably can do a better job then yamaha technician as I did call the closest one to me 100 miles away in Green Bay Wi ,told him I had a tyros 4 and he said WHAT IS THAT I said good by what a joke, ya either fix them yourself or you dont get them fixed, Thanks again fingered problem solved with your advice