I finally found an expert and decided to leave it to the expertsIf you really want to try it yourself and are not familiar with SMD soldering.
Remove the board from the housing.
Heat the remaining component with a soldering iron and add solder to remove it.
Use a desoldering wick to clean the pads(flat tip + flux).
Use solder paste on the pads and place the components.
(The solder paste helps to place the components and hold them in place.)
Use tweezers to hold the components in place and use a soldering iron (fine tip) to melt the paste and solder the SMD components to the board.