Chosen Solution

Hello everybody I am having a problems with my Macbook Pro after replacing the keyboard.Some keys are not working for example the F1 and the back slash key does not works and the volume down key got stuck not physically but after 3-5s work it works but the volume keys are not working than I mean after I press once the volume down key turns the volume all down and after 20s-30s I can only turn it up via function keys.This was the first problem.The second is when I turn my macbook on holding the option key it does nothing but in system the option key works.I tried smc reset but I could not perform the NVRAM.

@bisy The coffee spill pretty much answers your question. There’s most probably corrosion occurred to the zif connector on the logic board when the old keyboard got shorted by the spill. Either that or worse the IC taking care of keyboard circuits. You can try brushing carefully the zif connector on the logic board with >90% Isopropyl alcohol and see if that helps, but it’s just an attempt that may not change much either. Without being able to see connector’s condition under a microscope it’s hard to figure out what the condition may be.

If you spilled something on it. Wouldn’t it be in more places then just the keyboard?