Chosen Solution

My button R it’s now desoldered. What tools I need to sold it? A soldering Station? of what watts? or temperature (400°?)

Thanks!

You can buy an inexpensive soldering station that is good quality from hakko I believe it’s fx888. Ifixit might sell it. Update (05/21/2020) Ifixit does sell the entry level hakko soldering station fx888d for 99 dollars. If you plan to learn I would try that one.