3 out of 4 windows of my 4 door accord do not work, only 1 does. i checked the fuses and they are good. how do i check them? is there a motor for each of the windows or is it only 1 but with 4 outputs. how can i take them out and check them and how can i put them back, somebody told me that it's kind of hard. (I haven't really try it)