Microsoft Surface Pro 3 is not an easy repair, says iFixit
Such a low score should not be surprising to those who have followed iFixit's ranking of the Surface Pro line. Both the Microsoft Surface Pro and Microsoft Surface Pro 2 scored a "1" on their previous tests of "repairability".
Part of the problem is Microsoft's decision to replace 90 screws in the Surface Pro 2 for what iFixit calls "some seriously hideous adhesive." The adhesive was found by the display and battery, making it harder to repair the slate. Another problem is the display assembly, which requires the steel-edged nerves of the bomb squad, to remove and replace. As iFixit notes, "One slip-up, and you'll be out a screen."
The Microsoft Surface Pro 3 is made with magnesium casing and is solidly built. It should be able to withstand the daily grind. One model was dropped onto the stage during the unveiling of the device, and was unharmed. But keep in mind that if something happens to the tablet that forces you to get it repaired, it will not be an easy task.
source: iFixit via CNET