MacBook's internal trackpad and keyboard don't work

Macbook pro 13'' A1502

1) After water split on Macbook's internal keyboard I have started to have some issues. First 3 months trackpad and keyboard were sometimes freezing after turning on but I was able to fix this problem with restart. After 3 months problem appeared more and more often and then trackpad and keyboard have totally stopped working.

2) I thought that it must be a hardware problem but after changing both keyboard and trackpad I still have exactly the same problem.

3) Still, keyboard's power button is working fine, and when macbook is turned off the other keys are working too (I have tried resetting SMC and green light appeared).

4) Trackpad also isn't hopeless. Both my old and new trackpads make sound when I turn Macbook on and click, but sensor doesn't work at all.

5) I have tried resetting SMC and PRAM with no result.

6) Running Windows with bootcamp also didn't help.

7) I don't have Apple Warranty.

Maybe somebody can help me with my issue? Are there any people who have run into the same problem?