Chosen Solution
Hi everyone! After 5 long hours of work and help from IFixIt’s users, I managed to replace only my MacBook’s keyboard instead of the entire top case. But, now I have another issue, which came after my keyboard’s replacement: my trackpad’s haptic feedback stopped working after the disassembly and reassembly. The force touch works, multi-touch gestures recognizing pressure and etc, but the feedback doesn’t, at all. On the process, I didn’t notice any physical damage to the trackpad (I only touched the trackpad to take the batteries and cover plate off). The flat cable and the connector are OK, disconnected and reconnected them again, as well. No success. Any ideas or suggestions?
Have you checked the trackpad settings, there is a way to adjust the haptic feedback. Also try an SMC and NVRAM reset. I have never come across this issue (unless the trackpad is completely not working), but it’s possible the keyboard may be causing the issue? Try unplugging the keyboard and seeing if it works. Check the trackpad board to make sure there is no damage or a slight rip in the cable. The cable should be fine however, since you would have peeled this off before removing the battery.