After renewed the battery the touchpad and keypad doesn’t work anymore

I have checked the pins of the small cable the contact pins looks fine. But the strange thing is only the power button works the other keys don’t. The lights from the keyboard is working. But can it be that the touchpad is damaged or broken. I have inspected the touchpad by take it out and I see some scratches and a little bit of some isolating lose. I think this is happened by removing the battery from the MacBook by using a tool under the battery to lifting it up. But at the other hand has the small cable to do with the touchpad so that either keyboard and touchpad not working or is only the small cable for the keyboard and the big wide cable only for the touchpad? Hope that both is not broken.

@johanveekens I have had this before (On a MB Air), the Power button and a couple of keys worked fine, but some others keys not, on a closer look there was some corrosion & some damaged pins on the cable. A new keyboard cable to the board did the trick for me. These are quite delicate and a small bend or crease can break some lines. The pins that go into the connector can easily get separated and bent thus not making the correct connection needed for full function.

ok thnx , i will order first the small cable , hopefully I can order one on ifixit, if it still doesn't work then maybe replace the trackpad.

By the way when you had this problem your mouse trackpad isn't work either?

@johanveekens It depends on which pins are faulty or damaged on the cables to affect TP or KB keys. I would go for replacing the cable that conects to the logic board 1st.