hello all
i have a macbook a1278 with keyboard and trackpad erron not working at all the external usb works well.this board came to me without display i repaired the display but now have trackpad keyboard error one thing notice in this board the pch hub was hm76 and the cpu is icore 7 3520 what i am confused does this board have hm77 or hm76 maybe the keyboard and trackpad not working for this reason can anyone tell me what to look for keyboard i changed the usb2513 usb mux also need to check psoc for kbd tckpad which is again programmable