Chosen Solution
The power button works fine. But then the rest of keyboard and trackpad doesn’t work. I already reset PRAM, run the diagnostic got this error: 4SNS/1/C0000008: TsOP – 124 I bought a new trackpad but the result is the same. The Mac keeps very slow. I don’t mind about the keyboard/trackpad I use a USB and mouse but is painfully slow. I’m running out of ideas. Thanks
Have you spilt liquid on it or it’s died, the temperature sensor causing the fans to spin up and thermally throttle. Sounds like liquid damage due to keyboard and trackpad not working. Try disconnecting the camera aswell.
The error you are seeing is likely the palm rest sensor. In this series the sensor and the trackpad logic are within the Trackpad cable! You’ll need to replace it as well.
MacBook Pro Trackpad Flex Cable 821-1254-A
