Pema But you removed the membrane to follow the clues that correspond to those push buttons? And did you bridge the welding area? because if you did it to the score, maybe that is why they were not activated, with one of those that do not work, with following the 2 tracks of the 2 pages of the membrane and when welding 2 wire rods and joining them momentarily and if it reacts, it is if it is the flex membrane, try again but following the tracks well, greetings