Where Bill states the warmth is, is exactly where slight warmth is on my KN7000. At times, I have my keyboard on for 6 or seven hours with very little warmth. I am in the U.S. and the voltage is 110. Could it be that many of you in the U.K. and Europe with different voltage be the reason for this "hot" problem? I could be wrong but I think most of Europe is 220 V. Is this correct?