StevenR Posted January 9, 2020 Share Posted January 9, 2020 My "in warranty" PX780 developed a loud key (C2#). Many have reported fixing this problem by using canned air to clean the contacts. To fix mine, I taped the key cover open, tipped the piano forward to rest on the bench, and then glissed the keys a couple times. Problem solved. I suspect a small piece of tissue got inside as I had just damp wiped the keys. I did not want to use canned air as the one the store sold contained propane as a propellant, and I worried the propane would not be good for the sensors. Quote Link to comment Share on other sites More sharing options...
Brad Saucier Posted January 9, 2020 Share Posted January 9, 2020 I'm glad you solved it. Actually, you can sometimes blow on the keys yourself with great results. It may not always work, but it's worth a shot. Sometimes the issue is very minor and only takes a little air. Quote Link to comment Share on other sites More sharing options...
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