2R2 chip heating up when keyboard connected

[PriMan]

Hi,

I have a Late 2016 Macbook Pro 15-inch A1707 EMC 3072, i7 2.7GHz that had water spilled on the keyboard. The user turned it off but turned it back on the next day thinking it completely dried up. The computer died shortly after turning on.

When I diagnosed it, I did not find any signs of electrical damages or corrosion, but I noticed a chip located near the bottom right corner of the logic board labeled 2R2 heats up significantly when plugged in to power (external or battery).

I thought the logic board was fried, so I replaced it with a similar model. Testing the new (used) board, the same thing happens. I noticed the same chip heats up only with the keyboard is plugged in to the board, which makes me think the keyboard might be faulty.

What is that chip? Is it the keyboard chip? Is it heating up a sign of a bad keyboard, a bad logic board or both? I have attached pics of one of the boards + the 2R2 chip. I don't have the logic boards diagram and don't know how to read it, but part # is 820-00281-A.

Any help is appreciated.

Thanks

 

[PaulD-UK]

That's a 2.2 ohm resistor containing a couple of inches of coiled AWG20 wire.
Capable of carrying a high current and giving off a lot of heat, so there is a shorted component elsewhere?