bessen Posted October 13, 2013 Share Posted October 13, 2013 HI, I recently bought a new AP 450 celviano..now after 2 months its key shutter is now kind of jammed or not that smooth enough as when it came , another problem is that the keys are experiencing a little noisy when played... like a little shaky ..that too wasn't there before.. Please tell me if these problems are natural 2 Quote Link to comment Share on other sites More sharing options...
Joe Muscara Posted October 13, 2013 Share Posted October 13, 2013 You're still under warranty. You should contact Casio support, Mike Martin, or your retailer. These things shouldn't go bad after a couple of months. Quote Link to comment Share on other sites More sharing options...
XW-Addict Posted November 19, 2013 Share Posted November 19, 2013 I was checking these Piano out on youtube just to find out more about them and noticed a particular comment about that problem seems to do with. I pasted it in here maybe it will help you find out if its similar. I bought one of the first 620s shipped into the U.S. from Kraft Music, back in March of 2010. Adam at Kraft was very helpful, and the piano was in perfect condition when it arrived. I'm very satisfied with the instrument, but did experience a mysterious, intermittent buzzing resonance when I played in the lower register. Nobody at Kraft or Casio could explain this. Eventually, I figured out that the buzz happened when the keyboard cover wasn't firmly shoved back into the case. Quote Link to comment Share on other sites More sharing options...
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