My MacBook won't turn on

Thanks for the reply Dan.

I was hoping that as this was a liquid spill, I would only need to take the power button out to clean it and remove any sticky residue, as it feels tingy and wobbles in the casing - not normal. The only reason that I can tell it’s charging is by the trackpad still clicking for a while after i unplug it from the charger. What do you recommend I do - I want to avoid having to buy anew logic board as this model is quite expensive with 64gb of memory and all that jazz

@aidenmackay - What can you tell us on what preceded not turning on? Maybe we are going down the wrong path here.

Cleaning the button is a very delicate task as you can easily damage it. You see the TouchID part sits on top of a small circuit board area which holds the blister power switch that then connects to the logic board. While still a bit different, here’s an example what you face, review Step 14 in this guide Smontaggio MacBook Pro 13" Touch Bar fine 2016 that round part is the blister switch and the solder joints hold it to the board. It’s likely this area was damaged by a spill.

@aidenmackay I would say your take the power button and and clean it up is a good first start. You need to remove quite a lot to get at it as well, so you'll notice if anything else looks amiss, or has liquid. It may be though, that electronics inside the button are at fault, so a replacement might be necessary.

An easy way to check is just disconnect the power button/Touch ID sensor from the board, then connect it back to power and see if that helps. If the issue is within the power button, disconnecting it may allow the machine to boot up normally.