drahmmed Posted July 22, 2016 Posted July 22, 2016 hello every one Im new in this forum.... greetings to all my celviano-450 WE is new only 6 months last night sudden of all white key number 15 (from left) started to loose its tone response and become louder than all other keys what ever I press soft or hard its much much louder than others I tried unplugging the piano useless. change tone sensitivity from 1-4 its useless any one can help thanks Quote
Joe Muscara Posted July 23, 2016 Posted July 23, 2016 It sounds like a dirty contact. Since you're still under warranty, you should look into getting it repaired or replaced. Where did you buy it? 1 Quote
Jokeyman123 Posted July 23, 2016 Posted July 23, 2016 Joe's right, might need to get it repaired. Even minor dirt or something small could contaminate the contact below the key. Is the key at the same physical level as the others? In other words, does it look like it has shifted a bit up or down? This would indicate something broken in the key or it's mechanism. if this is not so, try using some compressed air-such as in computer dust aerosal containers and try to blow air around and into that key-try to get it under the back if you can. This might dislodge any contamination that could cause this. Don't use any chemical sprays-very harmful and will do more harm than good. 2 Quote
drahmmed Posted July 23, 2016 Author Posted July 23, 2016 well my celviano is not under warranty cause I buy it from ordinary store not dealing with casio any how I don't have air blower but I just tried electric cleaner with narrow head to clean up or dislodge the dirt but didn't help even I realized clean Greas come up to outside meaning good vacuum but I guess its not dirt but may be some sort simple mechanical problem under they key Im living in Iraq Arbil as far I know there is no casio service here so will try to fix it with my brother, I mean will open it on our risk in hope to fix it Quote
drahmmed Posted August 1, 2016 Author Posted August 1, 2016 Last night me and brother managed to uninstall celviano and we suceed to fix it it was a carbon dirt on the sensor under the key now its functioning very well Quote
Jokeyman123 Posted August 2, 2016 Posted August 2, 2016 Good job! The carbon contacts as you have found are very sensitive, even though the rubber boots keep these contained. Glad you were able to do this. it may help others here who might have the same problem. if you are not under warranty nd have no experienced service techs near you, it doesn't hurt to learn how to repair things yourself if you have the confidence and are willing to try. "Necessity is the mother of invention'-one reason why I use Frank Zappa as my avatar. Quote
Eric Chua Posted June 9, 2019 Posted June 9, 2019 On 8/2/2016 at 2:37 AM, drahmmed said: Last night me and brother managed to uninstall celviano and we suceed to fix it it was a carbon dirt on the sensor under the key now its functioning very well Hi can show me how to dismantle the top part of the keyboard in order for me to reach the keys of the keyboard? Thanks 1 Quote
BigJilm Posted June 15, 2020 Posted June 15, 2020 Hello I know this post is very old but it is the closest post I can find to my own problem. I need to open the keyboard on my AP-470 but for the life of me I cannot find any screws that would look like they will let me open it up. Anyone have any idea how to do this? When I remove the top piece in the back there is just a full sheet of this red mesh fabric with no screws...... Thanks Quote
Johnny5 Posted June 21, 2020 Posted June 21, 2020 Did you figure out how to open it? I have same issue Quote
gusthepianoguy Posted July 8, 2020 Posted July 8, 2020 Can you show me how you dismantle the top part of the keyboard? I have ap 420 celviano casio Quote
gusthepianoguy Posted July 8, 2020 Posted July 8, 2020 On 6/8/2019 at 8:53 PM, Eric Chua said: Hi can show me how to dismantle the top part of the keyboard in order for me to reach the keys of the keyboard? Thanks Hey show me ai have the same issue with my ap420 Quote
Gerard Sexton Posted December 14, 2020 Posted December 14, 2020 To take off the top of the piano, unscrew the screws at the top of the back of the piano. Quote
angusmcborg Posted June 13, 2021 Posted June 13, 2021 I'm disassembling a 460 now. To disassemble the top part of the piano you have to remove the screws at the top of the back of the piano then push the whole top piece forward. Once you get the screws removed from the back and slightly push forward, you'll see how easy it comes off. Next step... figuring out how to get the retractable keyboard cover off. Quote
Dins75 Posted July 8, 2024 Posted July 8, 2024 Hello draahmed, are you still active in this group? Quote
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