My wife spilled some wine on her keyboard and some keys no longer work. The keyboard is easy to replace but there are so many sub-L775D models and I see 3rd party replacement prices from $50+ to $15. I'm hoping that there's little (or no?) difference between replacement keyboards for L775D sub models ... is that true? Many ebay sellers don't list the sub models. My wife's model is an L775D-s7340. Will a keyboard for any L775dD model fit and work?