My Technics kn500 has been working pretty good up until now. A problem just started with the one touch play button. When I select the style and press one touch play I can see the sounds start to register on the screen for a second and then goes back to the previous settings. I have to press the one touch play button about 6 or 7 times to get it to work right. I do hold the button down long enough for the sounds to register but it doesn't seem to work properly. Is there and easy fix for this problem? Has any one else experienced similar problems?