WiFi not working due to water damage

EricPohl wrote:

How much would it cost to get my WiFi working again on my Mc book pro. It got damaged by water. Everything else seems to work fine except the WiFi

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"—

https://www.apple.com/retail/geniusbar/

https://checkcoverage.apple.com/

https://support.apple.com/my-support

Outside the USA

https://locate.apple.com/country

From iOS device using the app online Genius Bar appointment:

https://itunes.apple.com/us/app/apple-support/id1130498044?mt=8

If you have AppleCare+ it will cover a large portion of accidental damage.

https://www.apple.com/support/products/mac.html

AppleCare+ (similar for iPhone and iPad, each incident of accidental damage) for Mac will carry its own price tag. Screen damage or “external enclosure damage” will run $99 per incident, while other damage, including water damage, will run $299. Users receive coverage of two incidents under AppleCare+, and after the two incidents have been used up, out-of-warratny replacement rates will apply

Take it to an authorized service center for evaluation and cost to repair.