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#2456459 - Yesterday at 07:43 PM Casio AP-450, strange sound when a few keys are pressed
Sandbo Offline
Junior Member

Registered: 08/11/15
Posts: 7
Loc: Waterloo, Ontario, Canada
Hi,

Eventually I decided to get one from Bestbuy.ca as it was quite a good deal.

However, after spending the whole afternoon today assembling the piano and on trying the keys, there were two keys when hit hard they made a strange sound, sort of like something vibrating (very clear with the piano off, audible with piano on).

If I don't really want to bother to return the whole piano, what would be my option? (In-home repair in Canada?)
_________________________
Absolute beginner: Alfred Adult Basic All-in-One Level 1 - 30%
Yamaha P-105B (now)
Casio AP-450 (soon)

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#2456510 - Today at 01:10 AM Re: Casio AP-450, strange sound when a few keys are pressed [Re: Sandbo]
Charles Cohen Offline
2000 Post Club Member

Registered: 12/26/12
Posts: 2075
Loc: Richmond, BC, Canada
Quote:
. . .However, after spending the whole afternoon today assembling the piano and on trying the keys, there were two keys when hit hard they made a strange sound, sort of like something vibrating (very clear with the piano off, audible with piano on).


Question 1:

. . . So the sound isn't electronically-produced -- it's _mechanical_ ?
. . . That is, it'll happen even if you have the DP unplugged?

Question 2:

. . . When you say "hit hard", do you mean "at a normal FF playing level",
. . . or do you mean "when I pound on them" ?

This reminds me of the "rattle" or "buzz" that some people complained about in PX-350's, during early production.

Wild guess:

If the answer to the first question is "yes, it happens when the DP is unplugged", there's something loose (or rattling) inside the case.

Suggestion:

If the answer to the second question is "when I pound on them":

. . . Don't do that.

. Charles


Edited by Charles Cohen (Today at 01:11 AM)
_________________________
. Charles
---------------------------
PX-350 / microKorg XL+ / Pianoteq / Lounge Lizard / ZXA1 speaker

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#2456630 - Today at 12:42 PM Re: Casio AP-450, strange sound when a few keys are pressed [Re: Charles Cohen]
Sandbo Offline
Junior Member

Registered: 08/11/15
Posts: 7
Loc: Waterloo, Ontario, Canada
Thanks a lot for your reply,

Yes, the noise was made when the DP is turned off, so it is mechanical but not the speaker which might have problem.

Secondly, sorry for the confusion, it didn't have to hit very hard, as I can easily hear it even pressing using my baby finger.
And there are only 3 keys having this issue, I contacted Casio and will be recording the noise for them to check if a technician can be sent to fix it.
_________________________
Absolute beginner: Alfred Adult Basic All-in-One Level 1 - 30%
Yamaha P-105B (now)
Casio AP-450 (soon)

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#2456669 - 20 minutes 32 seconds ago Re: Casio AP-450, strange sound when a few keys are pressed [Re: Sandbo]
debussychopin Online   content
Full Member

Registered: 06/08/15
Posts: 204
This is interesting. I recently purchased a PX 850 which I believe is to be the same keyboard as the ap450.


I had issues w it from the getgo. I had two keys in the second octave above middle c make a rattling? /loose sound that when let go. It was way bothering when I played something slow and soft and I had to hit those keys. Also there was another register where whenever I played anything above mf let say some chords, the underneath would make an 'impacting cracking' sound. It wasnt due to anything loosely assembled ( i checked that over and plus it was coming from the keyboard itself , whcih does not need assembling ; it comes as a whole).


I had to go through the warranty (store I bought it is too far away to deal with them and told me to contact casio )

and casio sent me a PX860. the 860 is also in the process of being swapped bc:

the lower F below middle c has a sound like it is hitting some loose plastic bits inside the keyboard cavity. It is too bothersome. I shook the keyboard, did whatever, it never went away.
The upper half of the keyboard had a sound like the keys were 'clacking against bare wood' and the bottom half was proper, it sounded like nothing even when I played forte there.
basically i believe there is some supportive material in the lower half but it is offset? or misplaced in the upper half...giving to the clacking against bare wood sound of the keys.


Casio makes a good performing product but is very highly unreliable in my experience. Good luck.
_________________________
debussychopin.

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