As far as serviceability goes, the Samsung Series 5 is one of the easier notebooks or Ultrabooks I've ever taken apart. Most companies go out of their way to make servicing Ultrabooks tough so that when then break (hopefully many years down the road), you have to take them back to the manufacturer for service. This is not the case for Samsung with this model, chances are good if your local repair shop can get the part, they can easily repair this unit for you.
Please if you could share how to take the keyboard out for replacement?