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Joined: Oct 2014
Posts: 5
Junior Member
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OP
Junior Member
Joined: Oct 2014
Posts: 5 |
Apologies if this has been raised before but my problem seems to be a bit different from dead key issues I have seen raised. In my case all 'c's up and down the keyboard are intermittent. Also when touch is selected 'c's all come out really loud no matter how hard the key is hit. I cannot see how this could be down to a key switch. All other notes are fine.
Can anyone help please?
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Joined: Oct 2013
Posts: 1,667
1000 Post Club Member
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1000 Post Club Member
Joined: Oct 2013
Posts: 1,667 |
Keyboard input is usually multiplexed so yes, one bad connection or faulty component that sends a bad signal could possibly cause problems across multiple keys, especially if there's a pattern to it. What in particular that could be I do not know.
I see from your other post you have a Yamaha. Is it under warranty? Have you talked to them or a nearby Yamaha dealer?
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Joined: Oct 2014
Posts: 5
Junior Member
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OP
Junior Member
Joined: Oct 2014
Posts: 5 |
No it is not under warranty any more but I guess you are right and I need to find a service agent. Not so easy here in Spain. Thanks for getting back though.
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Joined: Nov 2009
Posts: 4,115
4000 Post Club Member
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4000 Post Club Member
Joined: Nov 2009
Posts: 4,115 |
This could be something as easy as an partially unseated connector. Are you willing to open it up?
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Joined: Dec 2012
Posts: 8,134
8000 Post Club Member
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8000 Post Club Member
Joined: Dec 2012
Posts: 8,134 |
This could be something as easy as an partially unseated connector. Are you willing to open it up? FWIW -- That (a partially-unseated connector) would be the first thing I'd look for. And I'd start with the connectors (and cable) that joins the keyboard to the main circuit board. This could be a _very_ low-tech repair, if you're lucky. . Charles
. Charles
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PX-350 / Roland Gaia / Pianoteq
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Joined: Oct 2014
Posts: 5
Junior Member
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OP
Junior Member
Joined: Oct 2014
Posts: 5 |
Thanks everyone for getting back. I took the instrument apart and was pleasantly surprised how serviceable and user friendly the process was.
It was full of Spanish dust but as suggested, it seems that the problem was down to a partially inserted flat cable. I hate them but at least I know what to look out for next time.
Thanks again.
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Joined: Sep 2007
Posts: 19,096
Yikes! 10000 Post Club Member
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Yikes! 10000 Post Club Member
Joined: Sep 2007
Posts: 19,096 |
So it's fixed? If so, great job! 
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Joined: Dec 2012
Posts: 8,134
8000 Post Club Member
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8000 Post Club Member
Joined: Dec 2012
Posts: 8,134 |
So it's fixed? If so, great job! +1. You've got to love those repairs where the hardest thing is getting up the courage to take something apart, that you've never taken apart before. . Charles
. Charles
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PX-350 / Roland Gaia / Pianoteq
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Joined: Oct 2014
Posts: 5
Junior Member
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OP
Junior Member
Joined: Oct 2014
Posts: 5 |
Yes Kawai, it is 100% fixed. My problem actually is that I dive in and take things apart without hesitating only for everything to spring apart. I was impressed just how servicable this was especially the keys.
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