MacBook Unibody Model A1278 got coffee spilled on it, and the keyboard lost the last row of keys. I went through all steps to replace it, the only problem was the ir cable didn't come out clean, looks like it may be torn. Would this cause the MacBook not to power up? The light on the power cable lights up and the battery lights all light up but nothing else happens when you press the power button?

Maybe a bad keyboard?

Thanks for your time and help in advance.

Does anyone have a part number for the ir cable?