Chosen Solution
Can I replace AirPower on my MacBook 2016 13inch Touch Bar???
Let’s try to fix what you have as you can’t replace the WiFi chip, sorry ;-{ You’ll need to replace the full logic board as the chip is a custom Apple chip which is not available! The dark Blue chip is the combo WiFi/Bluetooth chip
Even if you could get your hands on the chip you would need some very special equipment to remove the old one and mount the replacement BGA Rework Station Repair Heating Infrared Reballing Machine So can you explain more fully what appears to be the problem as maybe we can correct the problem or find an alternative solution.