px850user Posted May 23, 2015 Share Posted May 23, 2015 Is there any way to reload the waveform memory? On the 2 grand piano sounds (concert and modern) 2 adjacent notes E and Eb an octave above middle C have developed a loud buzzing sound after holding the key down for about a half second. All other notes and voices work. I have tried the factory reset. Quote Link to comment Share on other sites More sharing options...
Joe Muscara Posted May 23, 2015 Share Posted May 23, 2015 Are you sure something hasn't come loose and is resonating at those frequencies? Try using headphones and see if it's the sound or something physical that is loose or vibrating. Quote Link to comment Share on other sites More sharing options...
px850user Posted May 23, 2015 Author Share Posted May 23, 2015 No, it is very,very loud, much louder than the note. Quote Link to comment Share on other sites More sharing options...
px850user Posted May 23, 2015 Author Share Posted May 23, 2015 attached wave file011110_0018.wav Quote Link to comment Share on other sites More sharing options...
Display Name Posted May 23, 2015 Share Posted May 23, 2015 I am wondering if it's a key sensor issuing instead of a waveform issue. It's easy to check by connecting the PX-850 to a iPad or computer and using a MIDI monitor program to make sure those keys are sending the correct information. Quote Link to comment Share on other sites More sharing options...
px850user Posted May 23, 2015 Author Share Posted May 23, 2015 What kind of information could the key sensor send to make it sound like that? The key sensor should only be sending note on/off and velocity. All other voices - other pianos, strings, organs etc. sound OK. It is only on the grand piano sounds. Quote Link to comment Share on other sites More sharing options...
Display Name Posted May 23, 2015 Share Posted May 23, 2015 Oh just on the grand piano sounds.... sorry I missed that part. Wow that is strange. I afraid you will probably need to have your Privia serviced -- I don't know of any user fix for this. Quote Link to comment Share on other sites More sharing options...
px850user Posted May 23, 2015 Author Share Posted May 23, 2015 It is too much work to send in for repair. I was hoping there was some way of rewriting the waveform memory through the USB port. If there isn't, I will just use the other piano sounds. The grand piano sounds were the best I have heard on any electronic piano or soft synth. Quote Link to comment Share on other sites More sharing options...
Joe Muscara Posted May 24, 2015 Share Posted May 24, 2015 I just listened to the WAV file. Ouch. That needs to be fixed. I'd be concerned that whatever is causing that will eventually affect all of the sounds. Where are you located, where did you buy it, and when did you buy it? Quote Link to comment Share on other sites More sharing options...
px850user Posted May 24, 2015 Author Share Posted May 24, 2015 Minnetonka, MinnesotaEbay seller "Ethnic Musical Instruments" - was shipped directly from CasioDec 2012 Quote Link to comment Share on other sites More sharing options...
Joe Muscara Posted May 24, 2015 Share Posted May 24, 2015 You should contact Casio and see what can be done, and/or the seller to see if they handle this sort of thing. I know it's trouble but it would be better to have the whole ship righted. Quote Link to comment Share on other sites More sharing options...
DAvid Butler Posted September 1, 2017 Share Posted September 1, 2017 Hello PX 850 user, did you ever get this issue fixed? I have the same issue. Did you send it back for repair? Quote Link to comment Share on other sites More sharing options...
Kobus Posted May 18, 2022 Share Posted May 18, 2022 (edited) I have the same issue. It is a very similar sound but different pitch, and a bit more... uh... farty on holding down any one of 3 keys. It is only present on those 3 keys when holding the key in. It comes through on headphones as well, and it is not present in modes other than the Grand Piano ones. My piano is a Celviano AP 450, which is apparently very similar to or the same as the PX 850. It does not have a way to do a factory reset, but the Backup feature is disabled which is supposed to load the default settings on each startup (function button + second keyboard key from the right). I've discovered many posts like this about these pianos over the internet. Never with a solution. Many say it's because of corrupt waveform data. Some say it's as expensive to fix as buying a new piano. No one ever posts whether they got the problem fixed which is frustrating. Edited May 18, 2022 by Kobus discovered that the sound does exist once logged in Quote Link to comment Share on other sites More sharing options...
Dshocker Posted January 11, 2023 Share Posted January 11, 2023 Interesting forum as I've got the same exact problem you all describe on a PX-150. Anyone ever find a solution? Quote Link to comment Share on other sites More sharing options...
Sensorico79 Posted January 28, 2023 Share Posted January 28, 2023 (edited) Same problem with my Casio Privia Px-a800. Casio support is not very helpful here. I'm sure it is a waveform related problem. Even if I play the audio demos the buzz tone is played. It's 2023 now.. And still no solution. Please help us. I am not the only one. And where is Casios offiicial statement about this? It's so upsetting. Contacted the nearby Casio Dealer and they said a technician from Casio costs 200 € just for him to come over. Really? That's how you keep me away from buying Casio Products. Edited January 28, 2023 by Sensorico79 Quote Link to comment Share on other sites More sharing options...
Brad Saucier Posted January 29, 2023 Share Posted January 29, 2023 On 1/28/2023 at 11:42 AM, Sensorico79 said: Same problem with my Casio Privia Px-a800 Sorry to hear this happened. It's a terrible feeling when something goes out after years of enjoyment. Something similar recently happened with a TV I have enjoyed for about 10 years. It's gonna cost some to repair and bring it back to life. The manufacturer won't cover it since it's been out of warranty for so long, which is understandable. When did you purchase this instrument? Are you still under warranty? Was it new when you purchased it, or used? They will cover repairs on anything still in warranty. From what I'm seeing, PX-A800 was released 10 years ago. If I recall correctly, it was a limited edition anniversary model. Judging from what I've seen on the forums, the solution to the sound glitch has been replacement of the main board, a significant part of the instrument, and the cost seems to reflect that significance. I would guess new replacement parts for these are also probably hard to find by now. They usually make a limited run of service parts. If that's the case, you may be able to find replacement parts used, or maybe another piano used. I wish I had better news. Quote Link to comment Share on other sites More sharing options...
Sensorico79 Posted January 29, 2023 Share Posted January 29, 2023 2 hours ago, Brad Saucier said: Sorry to hear this happened. It's a terrible feeling when something goes out after years of enjoyment. This recently happened to me with a 50 inch TV I enjoyed for about 10 years. It's gonna cost me some repair money to bring it back to service. Unfortunately it's a rather common problem with those TVs after so many years. The manufacturer won't cover it since it's been out of warranty for so long, which is understandable. When did you purchase this instrument? Are you still under warranty? Was it new when you purchased it, or used? They will cover repairs on anything still in warranty. From what I'm seeing, PX-A800 was released 10 years ago. If I recall correctly, it was a limited edition anniversary model. Judging from what I've seen on the forums, the solution to the sound glitch has been replacement of the main board, a significant part of the instrument, the heart of it so to speak, and the cost seems to reflect how significant the part is. I would guess new replacement parts for these are also probably hard to find by now. They usually make a limited run of service parts. If that's the case, you may be able to find replacement parts used, or maybe another piano used. I wish I had better news. 😥 Thank you for your answer, I really appreciate it. I purchased it from a private seller. I didn't noticed the corrupt keys when I played it before the purchase. Maybe it wasn't even corrupt and it happened during transportation who knows. My local Casio Dealer offered to bring it to them and they will take a look at their workshop for 79€ - without Royal Casio Technician 🤴. It's my last hope. 😕 Quote Link to comment Share on other sites More sharing options...
Sensorico79 Posted February 7, 2023 Share Posted February 7, 2023 The Casio Technician looked at the electric piano. It's the mainboard (as expected). And it would cost 250€. I think it's very poor from casio. Even after a couple of years this should not happen. I am really disappointed. Goodbye Casio. In the future I will at most buy your calculators. 😉 1 Quote Link to comment Share on other sites More sharing options...
Dave D. Posted March 11 Share Posted March 11 I may try the same. Will post if mine is the main board. Quote Link to comment Share on other sites More sharing options...
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