I replaced the trackpad with a new one: the arrow moves but was not possible to click. I putted back the old trackpad and it works with. The solution: the eleventh picture shown a gray Torx type screw to the left of the connector where there is the recess in the back of the mouse. This screw is used to increase or decrease the depth of clicks. in my case it was too screwed and it was as if I held continually pressed the truckpad: therefore, it was enough to loosen it. At this point I ask myself since in the old truckpad I had problems with the physical click, I probably would have been enough to adjust the screw.

hello to everyone! unfortunately I have to replace the adhesive of the glass panel with a new one, how can I completely remove the old adhesive? once fixed the new one and leaning over the screen, I have to warm it the same? thank you very much