It is indeed possible to change a single switch on a plate mounted Cherry MX keyboard. and it should be quite easy to do. I could tell you how to do it, but I think it will be a lot better for you to watch this video by WhiteFireDragon:presence wrote:Anyone replace an MX Brown plate mounted switch? It seems like its worth the chance of recovering it for a few bucks instead of tossing it.
http://www.youtube.com/watch?v=VQ_2GxeR ... zw&index=4
it's a very long video (which I apparently watched all of) but one of the only I have found that illustrates how to actually replace a plate mounted Cherry switch. I highly recommend jumping a bit in it, but still watch most of it, as it contains more than a few important tips, If you have never tinkered with keyboards before.