I have a hds 12 gen 2 that is doing the same thing with the power button. After doing some reading online it seems to be a somewhat common problem with the gen 2 units. I can still feel the button "click" when I press it but no function from it at all. I did find a place called Clear Cast that people have sent them to get the problem fixed but never any mention of what the actual problem was. Bad button, bad connection at the button? I had thought about taking mine apart also but I don't have much experience with working on electronics. If you don't mind and you decide to take yours apart please let me know how easy it is, I may try to fix mine!

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