I've got the same problem. I've read carefully the instructions of Chimera and Karu, and I don't want to solder anything, so I've done some Karu's steps.
I've cut the of the cable, and fix again the white little plastic under it. Also I've scrachted over the four lines, to let contact them with the pins inside.
https://postimg.org/image/lzxvgrlo3
It doesn't work.
Also I've placed under the crystal layout connectiones, a little piece to incerase the pressure. Somebody has posted that as solution, but it doesn't work.
Finally, I think I've done some not too good for finding the solution, the good. I've unsticked -not all- the head of the cable linked to the touchpad, in order to test the connections with a little and thinn four copper wires -yes, I've soldered on the pcb-. It seems if part of the layout now were impressed sover the pad and not in the original support. I've fix one or two copper wires with the positions in the pad -I think it's not necessary the four wires connected at the same time to get some effect with the touchpad, isn't it?-.
I've thought in the possibility to repaint the layout connections -in the crystal- with a special semiconductor felt tip-pen. ?
I don't know if really I've made some wrong. I'm in that point where I don't know what can I do, and anything seems to be a mistake. Please, if someone can give me an advice.
Thanks.
