• how to open up a Roland KR 4500
  
  
  Hi there
  
  I fully understand your confusion. Recently I wanted to open my own KR 4500, and honestly it took me some time to realize how to do this. However, you do as follows:
  
  Leave the piano on the stand and remove 7 small bolts/screews on the bottom side of the piano (3 in each of the right and left side and 1 in the middle of the bottom plate). After removing these 7 screews you can lift up the upper cover, which is hinged in the lower back of the piano. You can open it approx. 100 degrees (then it is supported by a thin wire in each side).
  
  Hope this will help you.
  
  best regards
  
  Christian Smedegaard (a danish Roland player, who bought my KR 4500 back in 1993, when I was living in Japan).
  
  
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• HP-4500S stuck keys
  
  
  I'm not sure this is the same piano but probably close. I got mine open with the help of a service manual I bought online. Opening it up today, I'm no closer to fixing it. I checked connectors, etc. but no go. 9 non working keys are random on lower end of keyboard. Any suggestions would be greatly appreciated.
  
  Thanks,
  
  Joe
  
  
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• Stuck keys
  
  
  I was able to open my KR 4500 with the help of Joe's advice above. The stuck key was repaired by filing a small amount of plastic off both sides of the stuck key at the end of the key nearest the pianist. For some reason the plastic had swollen a bit and cutting it down just a little solved the problem. Walter
  
  
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• Stuck keys
  
  
  I probably described this incorrectly. "Stuck" really meant non-sound producing. Keys feel the same as others but produce no sound. Problem seems more electrical than mechanical.
  
  Thanks,
  
  Joe
  
  
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• Roland key problem
  
  
  It seems that quite a few people got their Roland intelligent keyboards with F# key problem. Most problem is that the key does not feel sticky but produce no sound or scrappy sound.
  
  
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• RE: Sticky Key
  
  
  Thanks, with a fix suggested earlier, the eE key is no longer sticky.
  
  
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