Hey. I bought a new JX3P with PG200 and I am very satisfied with it. It looks mint and everything is fresh... no issues with anything pretty much. One thing which I noticed though is that one of the black keys on the keyboard responds really bad when you press it while you play the synthesizer. I noticed this when I was playing with key transpose and some chords. Everything else on the keyboard works well without any issues. If I press the black key in a certain manner and apply a little bit more force to it then it responds and does what it should - changing pitch/transpose or just playing a sound in general. What could it be? Bad contact? Maybe some cleaning required? Apart from this it's in great shape so I don't want to part with it... although I am taking my synths to a synth doc soon to do some mods and I wonder if anyone has experience with this so I have the full picture. Thanks!

It's a dirty contact most likely. Should be an easy fix for any competent tech.

Sounds good. I’ll leave this to the doc. Should be no issue then. :-)