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I have a Roland HP2e digital piano and one of the keys has lost its touch sensitivity. It works initially but when it passes a certain threshold of loudness when played it goes to full volume on that key until the piano is switched off and on again. I do not think it is a thermal fault as it can be replicated by playing the key immediately after the piano has been switched back on without time to cool.

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  • rml7 Apr 12, 2009

    I have the same problem with an HP-2E. The G sharp key above middle C has lost its sensitivity. Interestingly, if I hold down the G key next door to it before I strike the G sharp key the effect does not occur.

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Just managed to fix key loudness problem on my sister's HP-2E after talking to the local Roland Service Center. Basically I had to remove all the rubbery strips under the keyboard, clean them and clean all the contacts on the keyboard PCBs with CO contact cleaner. Not a trivial procedure - 80 or so screws to remove and replace and a lot of parts.
It has completely solved the problem (apparently its not unusual on any keyboards). I have posted more details and a couple of pictures on my blog (http://web.me.com/iain_sommerville/Home/IainBlog/Entries/2009/4/20_Piano_Repair_2nd_Attempt.html not sure if that is a permalink - if it doesn't work go to http://sommerville.info and search for HP-2e).
A roland service center can fix this as well however it is pretty time consuming so they will charge you. They can also sell you replacement keyboard contact strips if cleaning them doesn't work. Hope this helps

Posted on Apr 20, 2009

  • iain8989 Apr 20, 2009

    The link didn't paste properly in the post - try this: http://web.me.com/iain_sommerville/Home/...

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