UPDATE: Replaced all 88 entire pads with ordinary felt 1mm (self adhesive), been a couple of months now using it flawlessly, back to new and even better feeling I'd say. Can't really understand why Kawai would make it so complicated from the beginning, but it's now solved, hope it helps.
Can you please elaborate? Did you replace the black padding and the clear plastic thingy with a felt-strip? I have the CS11 (GF2) and I already took it apart to fix the same issue but my fix didn't hold. The clear plastic thingy moves and either gets the metal part sticky or moves and starts clicking when an adjacent key is played.
@@batner google "Kawai grand feel key clinic pianoworldforum" and on page 17 there's a guy who recently explained the procedure with all details (stevenk1231), there's even explained what Ravensworks use to improve the very same part of the action on the VPC1
Hello David, first of all, thank you for your contribution and your time, sorry my English is not native. Recently I will be maintaining the glued keys on my kawai CA65 but I ordered the original kawai sliptape, here in Germany for casu 50 Euros they patch a felt and glue it with resistol, but I don't know if I should return the sliptape because I know it doesn't last long . Where did you buy the 1mm self adhesive? Could you give me a link to the product? I know that felt has more longevity!! I bought this sliptape but it hasn't arrived yet! So can I cancel it? www.synth-parts.com/produkte/tastaturen/kawai-tastaturen/5879/kawai-sliptape-streifen-fuer-holztasten Thank you very much man!! 🙂
@@dylanmcqueen4656 I'm glad this was helpful. The 1mm self adhesive felt can be bought in Amazon, the type of felt you'd use underneath the legs of your table or chairs to prevent your wooden floor from being scratched. Nonetheless, if you already bought the original strips, I'd recommend to keep them and to use them to replace all 88 keys. They're self-adhesive too, you'll just need to cut them out into small pieces, one for each key.
I am an authorized Kawai tech. The factory recommended procedure is to remove the PTFE (sliptape is what Kawai calls it) from every key. If you see it on a few, that means the remaining sliptape will soon be debonding as well. I use acetone in a needle applicator squirted on the sliptape to loosen the adhesive. It takes a bit of repeated application of acetone to get all the adhesive off the key. Some sliptape have rubber as the base, some have a woven fiber base that can really debond and make a mess. One must remove each keyweight and clean the capstan of all adhesive residue. Even a tiny bit of adhesive left on the capstan will make it drag. Purchase new sliptape from Kawai and install it about 1/32 inch from the end of each key. Also purchase the silicone oil from Kawai as you then apply one drop to the top of each sliptape. The oil really speeds up the response of the action. Reassembly each keyweight and key. Then level the keys with paper shims on the balance rail pins.
Thanks for this response. Do I need to contact Kawai directly to obtain the tape? I can't find a way of buying it online anywhere. Also, is the slip tape self adhesive and will the problem eventually reoccur or is it different to the one originally installed in the piano?
@@Justliam01 Have to buy it from Kawai. It is self adhesive. I use a breakoff razor utility knife to trim it after I stick it on to the key. You have to move to a fresh blade every few pieces to keep making a consistently clean cut. I stick it on the key, flip the key over, and then trim the edges on a wood cutting board.
@@keyboardtek Thanks for getting back, can you answer just a couple more questions. I've found the sliptape to buy. I've already cleaned all the glue off the capstans and realigned the unbonded pads as best I can for a temporary measure, it's really improved the piano a lot already. How hard are the original pads to remove? It seems to have a fibre base not the rubbery one. You mentioned realigning the keys afterwards, will that always be necessary? I had to make adjustments to a couple already by screwing the capstan out a little bit. Thanks again for any help, it's obviously impossible to get it repaired at the moment.
@@Justliam01 I put acetone in a needle dispenser squeeze bottle. Squirt some under the teflon layer of the old sliptape so it soaks into the fiber material. Let is sit about 30 seconds. Use the utility knife at a right angle and scrape the old sliptape off. Do not use the blade at a cutting angle as it will cut into the wood. Apply more acetone to any remaining adhesive residue, repeat until wood is completely clean of adhesive. When you stick the new sliptape onto the key, be sure it is about 1/16" to 1/8" from the end of the key. Note where the capstan rests on other keys so you put the new sliptape far enough from the end of the key.
@DavidIzquierdoAzzouz. Thank you greatly for this excellent tutorial. Particularly indespenable for me are your clear and thorough instructions for dismantling the casing - much more so than provided by other videos here on TH-cam on the same subject. When trying to work out how to dismantle my CA67 I was almost giving up in despair, but after finding and studying your video I succeeded without difficulty - and, one hour later, my sticky keys are now all behaving perfectly again! Full marks for your content, care and effort! BTW, there are some hugely informative comments posted below - not to be missed!
Muchas Gracias, David! My son and I were able to get a lot of keys fixed this way in just a few hours. Thank you so much for the detailed instructions and pictures!
Thank you for your details description. I had 2 or 3 sticking keys a few months ago and recently many more. I would was struggling to figure out how to get access to the keys. All good now!
I have a CA65 which I bought in 2013. Thought I would need to replace it or pay for repairs until I found this fix. My model differs slightly from the one in the video but the basics are the same. Cleaned 2 keys with Goo-gone applied with a Q-tip and covered the PTFE sheet with Scotch tape and it was good to go. Thanks for the video, much appreciated.
Thank you very much for uploading this detailed video! We took ours apart and fixed the sticky keys. However, it may be a temporary fix as a few are still sticky. I am guessing the tape is not as “smooth” as the original tape. BUT we are all very happy with this for now! Really appreciate this video.
Used this video as a guide when replacing the slip tape on several problematic keys of various degrees of severity on a CA78. The CA78 is slightly easier to work on, but overall very similar. I only replaced the tape on keys where the PTFE layer was obviously delayering from slip tape - you can see inspect the condition reasonably adequately using a torch rather than needing to remove each key. I used acetone in a needle bottle as recommended by Chris Domres to remove the failed factory slip tape. The replacement slip tape was supplied by the UK Kawai authorised supplier, W D Greenhill, and was different to what's factory fitted - slightly different dimensions.Hopefully the replacement will be more durable. I used isopropyl alcohol to clean the gunk off the capstans and a robotics silicon oil which should hopefully be perfect for this use case. I suspect this won't be the last time I have the instrument open though. Thank you David Izquierdo Azzouz
Thanks alot! I replaced sliptape with 2mm felt for all sticky keys (for some reasons mostly f, f#, g) and it works perfecly fine! I was too lazy/occupied to rework all keys but since opening the piano is not too much work, it can be done later if required.
@@DavidIzquierdoAzzouz Thank you so much, dear David! Take care and all the best for you! You know, I need sometimes to practice on a silent piano( late in the evening) and suddenly one key didn't work... I also couldn't ask anybody to help me because of quarantine, so your video REALLY helped me a lot!
Hey David, thanks so much for sharing this. The problem I have with my CA58, the mechanics of which are built pretty similarly to yours I believe, isn‘t that the keys are sticky, but that some of them make a pretty clunky mechanical sound when I hit them (while most keys don‘t make any sound noticeable mechanical sound at all). Do you or anyone else have an idea how to address this?
I can't tell exactly why you're having those noises, but my guess is that it's most probably caused by the pins, they sometimes need adjustment, also it could be the seating rail underneath the key, the felt that cushions the key drop.. Try to investigate a bit on the internet, there's plenty of reporting on these issues, good luck 🤞🏻
Hola david hablas español!! lo vi en un comentario , saludos desde Alemania y muchas gracias por tu aporte. Yo tengo ese problema de las teclas pegadas en mi ca65, decidi abrirlo por que estudie electronica basica aunque hay componentes electronicos aqui es mas mecanico por asi decirlo. Realmente compre el piano de segundamano a un precio decente contemplando repararlo yo mismo. Peri la cinta original de Kawai por casi 50 euros pero puedo regresarla, el miedo que tengo que he visto que no es muy longeva! y lei por ahi en algunos foros que el fieltro de piano es mucho mas longevo , te adjunto el link de la cinta original y ellos mismos alli venden un fieltro que recomiendan pero va pegado aun con resistol blanco. Lei que recomiendas fieltro de 1mm autoadesivo, me podrias regalar un link de donde puedo conseguirlo? tal vez amazon? es fieltro de piano o comun? tambien lei que te va mejor incluso en la respuesta midi y sensacion! segun Kawai uso este sliptape para reducir ruido mecanico! bueno al final te dejo el link: ya que lo desarmado, note que las partes como engranes de la cubierta de las teclas deslizable esta muy seco que grasa puedo usar alli? y lei en un foro que recomiendan engrasar los martillos pero tampoco se con que grasa. en tu video tengo una duda pusiste DUREX sunpongo que eso no funciono mucho y probaste con el fierltro autoadesivo? Bueno gracias por tu tiempo y aporte , Mantendre mi CA65 desarmado cruzando los dedos para ver si me puedes orientar , un tecnico de Kawai te comento que usa la cinta de kawai y aceite de silicon pero no lo encuentro por ningun lado. La cinta me costo casi 50 euros, asi que no se si el fieltro sea mas barato pero no importa lo barato si no lo longevo!! www.synth-parts.com/produkte/tastaturen/kawai-tastaturen/5879/kawai-sliptape-streifen-fuer-holztasten Link de la cinta de kawai que compre. Recibe un saludo y abrazo desde Alemania 😀 Gracias hombre por tu tiempo!!
Nada hombre, es un placer, en español me resultará más sencillo explicarte. Mira, la solución que propongo en el vídeo es buena pero utilizar las bandas adhesivas de tu link también es buena idea, de hecho, la diferencia de precio es unos 30€ que tampoco van a ningún lado. Por qué lo digo? Porque después de estar un tiempo con mis fieltros, acabé cambiándolos y poniendo esa misma cinta que comentas, la original. Me había autosugestionado y no iba a descansar hasta tener todo original en el piano, cosa que luego descubrí que tampoco había mejorado sustancialmente, me seguía gustando más el tacto de los fieltros que había montado por mi cuenta, que no son más que esos aue puedes comprar en cualquier superficie comercial o en Amazon, sirven para poner debajo de las patas de lis muebles y así evitar rozaduras si tienes parquet en el suelo etc. Los hay ya cortados en formas de círculo o cuadrado de diferentes tamaños o en láminas pequeñas que puedes confeccionar a tu gusto (las que yo compré). Dicho esto, aunque me gustaba el tacto tal y como lo tenía con esos fieltros, he de decir que cuando lo volví a abrir para poner los originales de la marca, he notado que habían cogido la forma de la chincheta (capstan) en vez de mantener la rigidez y esponjosidad de forma uniforme en todo el cuadradito, no sé si me explico. Nada grave, pero me esperaba que con el uso no se acabasen deformando, que mantuviesen la elasticidad del primer día pero bueno, los originales acaban teniendo el mismo problema por llamarlo así, se deforman justo donde empujan el capstan, razón por la que se acaban desplazando las láminas de PTFE en las almohadillas originales. A lo que voy, investigando más, llegué a la conclusión de que lo mejor sería usar fieltro de piano, fieltro específico para este propósito, que es el que usan en los acústicos y que aguanta fuerza y tensión sin inmutarse, estonse debe a la composición y densidad del fieltro para piano. La pega es conseguirlo (en Alemania será relativamente fácil) y pegarlo con adhesivo adecuado, que no traspase la base y estropee el cuerpo de la almohadilla. Un Klaviermeister puede recomendarte ambas cosas, quizá incluso te pueda vender o realizar el trabajo, pagarás la mano de obra que será carilla pero el resultado será insuperable. Esto lo aprendí de una famosa tienda canadiense especialista en pianos (no mencionaré el nombre pero seguro que conocerás) y que realizaban este trabajo para todos los modelos que vendían y que llevasen esa tecla (al parecer es un problema bastante común). Conclusión, prueba con lo que has comprado que te resultará lo más práctico de momento y más adelante en dos o tres años si ves que tienes el problema de nuevo pues haz lo del fieltro de piano con pegamento que es un poco más complicado, así es como lo veo. Importante, las almohadillas se acaban despegando por desgaste pero también por exposición a altas temperaturas, te recomiendo que no pongas el piano cerca de fuentes de temperatura como la luz del sol directa en días de calor (verano) o cerca de radiadores en invierno. Me olvidaba, para los martillos usa grasa con base de silicona, yo usé una con base PTFE que también va bien pero mejor la otra. Tendrás que tocar bastante antes de que vuelvas a sentir las teclas normal porque después de aplicar la grasa, los martillos han de rotar bastante para distribuirla bien bien por todo el eje. Por cierto, no te olvides de limpiar la grasa vieja antes de aplicar la nueva, parece una tontería pero no. Limpiar también los capstan (las chinchetas), la suciedad aunque no la veas está ahí y acaba generando fricción contra la lámina PTFE de las almohadillas. Mucha suerte y un saludo!
@@DavidIzquierdoAzzouz Que amable por tu respuesta !! Muchas gracias por compartir tu experiencia, yo queria porner fieltro pero no supe si eso tal vez aunque sea mas longeco haria la respuesta mas lenta por la friccion, pero es bueno que compartas tu experiencia eso ayuda mucho a los que aun no hemos probado esos metodos. www.synth-parts.com/produkte/tastaturen/kawai-tastaturen/6727/klavierfilz-fuer-kawai-sliptape-ersatz Este link es de la misma pagina donde ordene la cinta Autoadesiva de Kawai y en ese mismo producto cuando estaba agotado recomendaban este fieltro para piano, incluso alli ponen un articulo de com hacerlo etc.. Y pegarlo con Ponal express. Pero bueno si ya pedi la cinta probare con eso, espero que dure un par de años. Tambien engrasar las partes plasticas de la tapa corrediza y donde los partillos hacen friccion con la simulacion de escape :) Estaba apunto de comprar aca una super oferta de un CA79 con 3 años de garantia por 1300 Euros! pero se fue rapido en E bay. Te mando un saludo, yo soy Mexicano pero vivo aca por que mi esposa es Alemana Seguimos en contacto y si en algo puedo ser util tambien por aqui estaremos. Dis te bendiga y gracias nuevamente.
I Can't believe the very bad after sales service by Kawai, I purchased a CA78 in Malaga and found this huge problem with sticking keys, if I had known this I wouldn't have bought Kawai. I have sent several emails to support with very little or no support. Kawai should be doing a recall and doing necessary modifications, they obviously know there is a problem having completely changing key actions on the CA79/99 models. Very annoyed and angry.
I've had the same problem and the after service is terrible. The keys stick after a certain amount of time and they also become heavy and less free, although the bounce is still there. I've never had any problems with Yamaha or Casio. I don't think I would buy kawai again.
Hola David, he llegado a tu video desde el foro de pianoworld... Tengo un par de teclas con este problema en mi CA97. Sólo quiero preguntarte si el procedimiento con la cinta adhesiva sigue dando buen resultado o has tenido que sustituir las láminas de PTFE. Muchas gracias por el vídeo, es de gran ayuda. Un saludo desde Barcelona.
Buenas Germán, te confirmo que sin problemas, las teclas me van perfectamente e incluso he comprobado que dan la misma velocidad MIDI aplicando el mismo peso que en las teclas sanas, así que contento ☺
Why is this problem even occurring in the first place? Im playing a CA65 which is roughly 4 years old and I just can’t believe that kawai tells me that I need to fix it myself. 4 year old DIGITAL piano?
I've just replaced all 88 pads, used ordinary felt 1mm (self adhesive), been now 2 months using it flawlessly, back to new yet better feeling I'd say. Will upload a vid soon if got the time.
@@DavidIzquierdoAzzouz Ive read about many working solutions, but im thinking about selling it, so that I never have to mess with Kawai again. Worst user Experience I had in my life except for crack.
@@howemusictuition I haven't uploaded any new vid but I basically used ordinary felt for furniture (like the one you put on chair's legs not to scratch your floor when dragging around), compressed synthetic felt, nothing special..
@@DavidIzquierdoAzzouz thanks for your reply, I was thinking of doing this with mine, as its nearing the end of its warranty - Is it noisier when playing? And have you had any other issues with the piano?
You're right, but people usually immediately realize what it is once they have this issue. However, it's when the key feels stiff and you can't push it down unless you press harder than normally, while having the feel it's sluggish and doesn't completely bounce up in a regular way, also it doesn't sound most times you press the affected key.. Ir happens to all brands if you research a bit you'll see what it exactly is
@@DavidIzquierdoAzzouz I see. It actually seems the same issue I've just found on my CA-65 then. I will try to follow your instructions and confirm that. Thank you for your efforts.
Je suis désolé mais je ne sais pas comment vous aider puisque je ne l’ai fait que pour ce modèle et je soupçonne que tous les modèles ne partagent pas la même procédure
Well it's a very appealing piano indeed, but for now I'll stick to the GF2 which is still pleasing to play. But after this experience, I'm surely considering other alternatives in the future (Roland among them)
@@DavidIzquierdoAzzouz wich model you would suggest? I have to buy a new piano and listening you, and following you from long time I was going to buy a CA97...but after what you wrote...now I'm definitely confused...I thought that GRAND FEEL II was the best...can you tell me some models that are similar in TOUCH? Thank you so much David! :)
@@cirogallo4078 well if it helps, I've been doing some research and apparently most pianos suffer sooner or later the same symptoms, meaning some maintenance is required, in my case I was frustrated because I thought that wouldn't happen to a mid-high range Kawai, but it wasn't the end of the world either. I can blindly recommend this beast, and would probably even buy it again, action is sublime and sounds are super editable, I got some sounds that I just cannot stop playing, so real and so adapted to my liking.. I don't wanna sound like advertising this brand, but truth must be said. However, there are some decent competitors out there you may want to try like PHA50 (Roland FP90 or RD2000), NWX (Yamaha P515) and casio GP series (hybrid action), those would be some I'd consider as an alternative, but honestly speaking I don't really think any of those is better than a CA98 in terms of price/quality, give them a try and let's know 😉
UPDATE: Replaced all 88 entire pads with ordinary felt 1mm (self adhesive), been a couple of months now using it flawlessly, back to new and even better feeling I'd say. Can't really understand why Kawai would make it so complicated from the beginning, but it's now solved, hope it helps.
Can you please elaborate? Did you replace the black padding and the clear plastic thingy with a felt-strip? I have the CS11 (GF2) and I already took it apart to fix the same issue but my fix didn't hold. The clear plastic thingy moves and either gets the metal part sticky or moves and starts clicking when an adjacent key is played.
@@batner google "Kawai grand feel key clinic pianoworldforum" and on page 17 there's a guy who recently explained the procedure with all details (stevenk1231), there's even explained what Ravensworks use to improve the very same part of the action on the VPC1
@@DavidIzquierdoAzzouz Sure, thanks man!
Hello David, first of all, thank you for your contribution and your time, sorry my English is not native.
Recently I will be maintaining the glued keys on my kawai CA65 but I ordered the original kawai sliptape, here in Germany for casu 50 Euros they patch a felt and glue it with resistol, but I don't know if I should return the sliptape because I know it doesn't last long .
Where did you buy the 1mm self adhesive? Could you give me a link to the product? I know that felt has more longevity!!
I bought this sliptape but it hasn't arrived yet! So can I cancel it?
www.synth-parts.com/produkte/tastaturen/kawai-tastaturen/5879/kawai-sliptape-streifen-fuer-holztasten
Thank you very much man!! 🙂
@@dylanmcqueen4656 I'm glad this was helpful. The 1mm self adhesive felt can be bought in Amazon, the type of felt you'd use underneath the legs of your table or chairs to prevent your wooden floor from being scratched.
Nonetheless, if you already bought the original strips, I'd recommend to keep them and to use them to replace all 88 keys. They're self-adhesive too, you'll just need to cut them out into small pieces, one for each key.
I am an authorized Kawai tech. The factory recommended procedure is to remove the PTFE (sliptape is what Kawai calls it) from every key. If you see it on a few, that means the remaining sliptape will soon be debonding as well. I use acetone in a needle applicator squirted on the sliptape to loosen the adhesive. It takes a bit of repeated application of acetone to get all the adhesive off the key. Some sliptape have rubber as the base, some have a woven fiber base that can really debond and make a mess. One must remove each keyweight and clean the capstan of all adhesive residue. Even a tiny bit of adhesive left on the capstan will make it drag. Purchase new sliptape from Kawai and install it about 1/32 inch from the end of each key. Also purchase the silicone oil from Kawai as you then apply one drop to the top of each sliptape. The oil really speeds up the response of the action. Reassembly each keyweight and key. Then level the keys with paper shims on the balance rail pins.
Thanks for this response. Do I need to contact Kawai directly to obtain the tape? I can't find a way of buying it online anywhere.
Also, is the slip tape self adhesive and will the problem eventually reoccur or is it different to the one originally installed in the piano?
@@Justliam01 Have to buy it from Kawai. It is self adhesive. I use a breakoff razor utility knife to trim it after I stick it on to the key. You have to move to a fresh blade every few pieces to keep making a consistently clean cut. I stick it on the key, flip the key over, and then trim the edges on a wood cutting board.
@@keyboardtek Thanks for getting back, can you answer just a couple more questions. I've found the sliptape to buy.
I've already cleaned all the glue off the capstans and realigned the unbonded pads as best I can for a temporary measure, it's really improved the piano a lot already.
How hard are the original pads to remove? It seems to have a fibre base not the rubbery one. You mentioned realigning the keys afterwards, will that always be necessary? I had to make adjustments to a couple already by screwing the capstan out a little bit.
Thanks again for any help, it's obviously impossible to get it repaired at the moment.
@@Justliam01 I put acetone in a needle dispenser squeeze bottle. Squirt some under the teflon layer of the old sliptape so it soaks into the fiber material. Let is sit about 30 seconds. Use the utility knife at a right angle and scrape the old sliptape off. Do not use the blade at a cutting angle as it will cut into the wood. Apply more acetone to any remaining adhesive residue, repeat until wood is completely clean of adhesive. When you stick the new sliptape onto the key, be sure it is about 1/16" to 1/8" from the end of the key. Note where the capstan rests on other keys so you put the new sliptape far enough from the end of the key.
@@keyboardtek Great, thanks for your help. I'm going to give it a go if/when my cleaning wears off.
@DavidIzquierdoAzzouz. Thank you greatly for this excellent tutorial. Particularly indespenable for me are your clear and thorough instructions for dismantling the casing - much more so than provided by other videos here on TH-cam on the same subject. When trying to work out how to dismantle my CA67 I was almost giving up in despair, but after finding and studying your video I succeeded without difficulty - and, one hour later, my sticky keys are now all behaving perfectly again! Full marks for your content, care and effort!
BTW, there are some hugely informative comments posted below - not to be missed!
Muchas Gracias, David! My son and I were able to get a lot of keys fixed this way in just a few hours. Thank you so much for the detailed instructions and pictures!
Thank you for your details description. I had 2 or 3 sticking keys a few months ago and recently many more. I would was struggling to figure out how to get access to the keys. All good now!
I have a CA65 which I bought in 2013. Thought I would need to replace it or pay for repairs until I found this fix. My model differs slightly from the one in the video but the basics are the same. Cleaned 2 keys with Goo-gone applied with a Q-tip and covered the PTFE sheet with Scotch tape and it was good to go. Thanks for the video, much appreciated.
Pleasure 👍
Thank you very much for uploading this detailed video! We took ours apart and fixed the sticky keys. However, it may be a temporary fix as a few are still sticky. I am guessing the tape is not as “smooth” as the original tape. BUT we are all very happy with this for now! Really appreciate this video.
Used this video as a guide when replacing the slip tape on several problematic keys of various degrees of severity on a CA78. The CA78 is slightly easier to work on, but overall very similar. I only replaced the tape on keys where the PTFE layer was obviously delayering from slip tape - you can see inspect the condition reasonably adequately using a torch rather than needing to remove each key. I used acetone in a needle bottle as recommended by Chris Domres to remove the failed factory slip tape. The replacement slip tape was supplied by the UK Kawai authorised supplier, W D Greenhill, and was different to what's factory fitted - slightly different dimensions.Hopefully the replacement will be more durable. I used isopropyl alcohol to clean the gunk off the capstans and a robotics silicon oil which should hopefully be perfect for this use case. I suspect this won't be the last time I have the instrument open though. Thank you David Izquierdo Azzouz
Thanks alot! I replaced sliptape with 2mm felt for all sticky keys (for some reasons mostly f, f#, g) and it works perfecly fine! I was too lazy/occupied to rework all keys but since opening the piano is not too much work, it can be done later if required.
I'm glad it helped!
Very good solution. Thank you.
Thank you so much! Your video helped me a lot! Wish you a wonderful day and all the best!
Thanks Kristina, keep the nice vids up 😉
@@DavidIzquierdoAzzouz Thank you so much, dear David! Take care and all the best for you! You know, I need sometimes to practice on a silent piano( late in the evening) and suddenly one key didn't work... I also couldn't ask anybody to help me because of quarantine, so your video REALLY helped me a lot!
@@kristinamiller891 really glad it helped, all the best and practice hard! 💪😁
@@DavidIzquierdoAzzouz Thank you so much! Take care!
Hey David, thanks so much for sharing this. The problem I have with my CA58, the mechanics of which are built pretty similarly to yours I believe, isn‘t that the keys are sticky, but that some of them make a pretty clunky mechanical sound when I hit them (while most keys don‘t make any sound noticeable mechanical sound at all). Do you or anyone else have an idea how to address this?
I can't tell exactly why you're having those noises, but my guess is that it's most probably caused by the pins, they sometimes need adjustment, also it could be the seating rail underneath the key, the felt that cushions the key drop.. Try to investigate a bit on the internet, there's plenty of reporting on these issues, good luck 🤞🏻
Hola david hablas español!! lo vi en un comentario , saludos desde Alemania y muchas gracias por tu aporte. Yo tengo ese problema de las teclas pegadas en mi ca65, decidi abrirlo por que estudie electronica basica aunque hay componentes electronicos aqui es mas mecanico por asi decirlo. Realmente compre el piano de segundamano a un precio decente contemplando repararlo yo mismo. Peri la cinta original de Kawai por casi 50 euros pero puedo regresarla, el miedo que tengo que he visto que no es muy longeva! y lei por ahi en algunos foros que el fieltro de piano es mucho mas longevo , te adjunto el link de la cinta original y ellos mismos alli venden un fieltro que recomiendan pero va pegado aun con resistol blanco. Lei que recomiendas fieltro de 1mm autoadesivo, me podrias regalar un link de donde puedo conseguirlo? tal vez amazon? es fieltro de piano o comun? tambien lei que te va mejor incluso en la respuesta midi y sensacion! segun Kawai uso este sliptape para reducir ruido mecanico! bueno al final te dejo el link: ya que lo desarmado, note que las partes como engranes de la cubierta de las teclas deslizable esta muy seco que grasa puedo usar alli? y lei en un foro que recomiendan engrasar los martillos pero tampoco se con que grasa. en tu video tengo una duda pusiste DUREX sunpongo que eso no funciono mucho y probaste con el fierltro autoadesivo? Bueno gracias por tu tiempo y aporte , Mantendre mi CA65 desarmado cruzando los dedos para ver si me puedes orientar , un tecnico de Kawai te comento que usa la cinta de kawai y aceite de silicon pero no lo encuentro por ningun lado. La cinta me costo casi 50 euros, asi que no se si el fieltro sea mas barato pero no importa lo barato si no lo longevo!! www.synth-parts.com/produkte/tastaturen/kawai-tastaturen/5879/kawai-sliptape-streifen-fuer-holztasten
Link de la cinta de kawai que compre. Recibe un saludo y abrazo desde Alemania 😀 Gracias hombre por tu tiempo!!
Nada hombre, es un placer, en español me resultará más sencillo explicarte. Mira, la solución que propongo en el vídeo es buena pero utilizar las bandas adhesivas de tu link también es buena idea, de hecho, la diferencia de precio es unos 30€ que tampoco van a ningún lado. Por qué lo digo? Porque después de estar un tiempo con mis fieltros, acabé cambiándolos y poniendo esa misma cinta que comentas, la original. Me había autosugestionado y no iba a descansar hasta tener todo original en el piano, cosa que luego descubrí que tampoco había mejorado sustancialmente, me seguía gustando más el tacto de los fieltros que había montado por mi cuenta, que no son más que esos aue puedes comprar en cualquier superficie comercial o en Amazon, sirven para poner debajo de las patas de lis muebles y así evitar rozaduras si tienes parquet en el suelo etc. Los hay ya cortados en formas de círculo o cuadrado de diferentes tamaños o en láminas pequeñas que puedes confeccionar a tu gusto (las que yo compré).
Dicho esto, aunque me gustaba el tacto tal y como lo tenía con esos fieltros, he de decir que cuando lo volví a abrir para poner los originales de la marca, he notado que habían cogido la forma de la chincheta (capstan) en vez de mantener la rigidez y esponjosidad de forma uniforme en todo el cuadradito, no sé si me explico. Nada grave, pero me esperaba que con el uso no se acabasen deformando, que mantuviesen la elasticidad del primer día pero bueno, los originales acaban teniendo el mismo problema por llamarlo así, se deforman justo donde empujan el capstan, razón por la que se acaban desplazando las láminas de PTFE en las almohadillas originales.
A lo que voy, investigando más, llegué a la conclusión de que lo mejor sería usar fieltro de piano, fieltro específico para este propósito, que es el que usan en los acústicos y que aguanta fuerza y tensión sin inmutarse, estonse debe a la composición y densidad del fieltro para piano. La pega es conseguirlo (en Alemania será relativamente fácil) y pegarlo con adhesivo adecuado, que no traspase la base y estropee el cuerpo de la almohadilla. Un Klaviermeister puede recomendarte ambas cosas, quizá incluso te pueda vender o realizar el trabajo, pagarás la mano de obra que será carilla pero el resultado será insuperable. Esto lo aprendí de una famosa tienda canadiense especialista en pianos (no mencionaré el nombre pero seguro que conocerás) y que realizaban este trabajo para todos los modelos que vendían y que llevasen esa tecla (al parecer es un problema bastante común).
Conclusión, prueba con lo que has comprado que te resultará lo más práctico de momento y más adelante en dos o tres años si ves que tienes el problema de nuevo pues haz lo del fieltro de piano con pegamento que es un poco más complicado, así es como lo veo.
Importante, las almohadillas se acaban despegando por desgaste pero también por exposición a altas temperaturas, te recomiendo que no pongas el piano cerca de fuentes de temperatura como la luz del sol directa en días de calor (verano) o cerca de radiadores en invierno.
Me olvidaba, para los martillos usa grasa con base de silicona, yo usé una con base PTFE que también va bien pero mejor la otra. Tendrás que tocar bastante antes de que vuelvas a sentir las teclas normal porque después de aplicar la grasa, los martillos han de rotar bastante para distribuirla bien bien por todo el eje. Por cierto, no te olvides de limpiar la grasa vieja antes de aplicar la nueva, parece una tontería pero no.
Limpiar también los capstan (las chinchetas), la suciedad aunque no la veas está ahí y acaba generando fricción contra la lámina PTFE de las almohadillas.
Mucha suerte y un saludo!
@@DavidIzquierdoAzzouz Que amable por tu respuesta !! Muchas gracias por compartir tu experiencia, yo queria porner fieltro pero no supe si eso tal vez aunque sea mas longeco haria la respuesta mas lenta por la friccion, pero es bueno que compartas tu experiencia eso ayuda mucho a los que aun no hemos probado esos metodos.
www.synth-parts.com/produkte/tastaturen/kawai-tastaturen/6727/klavierfilz-fuer-kawai-sliptape-ersatz
Este link es de la misma pagina donde ordene la cinta Autoadesiva de Kawai y en ese mismo producto cuando estaba agotado recomendaban este fieltro para piano, incluso alli ponen un articulo de com hacerlo etc.. Y pegarlo con Ponal express.
Pero bueno si ya pedi la cinta probare con eso, espero que dure un par de años.
Tambien engrasar las partes plasticas de la tapa corrediza y donde los partillos hacen friccion con la simulacion de escape :)
Estaba apunto de comprar aca una super oferta de un CA79 con 3 años de garantia por 1300 Euros! pero se fue rapido en E bay.
Te mando un saludo, yo soy Mexicano pero vivo aca por que mi esposa es Alemana
Seguimos en contacto y si en algo puedo ser util tambien por aqui estaremos.
Dis te bendiga y gracias nuevamente.
I could repair my piano. thank you for your great video.
I'm glad to help!
Very interesting!!Thank you for sharing!😊🌹🎶
Thank you Macky! 😊
I Can't believe the very bad after sales service by Kawai, I purchased a CA78 in Malaga and found this huge problem with sticking keys, if I had known this I wouldn't have bought Kawai. I have sent several emails to support with very little or no support. Kawai should be doing a recall and doing necessary modifications, they obviously know there is a problem having completely changing key actions on the CA79/99 models. Very annoyed and angry.
Very improvable indeed
I've had the same problem and the after service is terrible. The keys stick after a certain amount of time and they also become heavy and less free, although the bounce is still there. I've never had any problems with Yamaha or Casio. I don't think I would buy kawai again.
very very thanks, super helpful video
Hola David, he llegado a tu video desde el foro de pianoworld... Tengo un par de teclas con este problema en mi CA97. Sólo quiero preguntarte si el procedimiento con la cinta adhesiva sigue dando buen resultado o has tenido que sustituir las láminas de PTFE. Muchas gracias por el vídeo, es de gran ayuda. Un saludo desde Barcelona.
Buenas Germán, te confirmo que sin problemas, las teclas me van perfectamente e incluso he comprobado que dan la misma velocidad MIDI aplicando el mismo peso que en las teclas sanas, así que contento ☺
Why is this problem even occurring in the first place? Im playing a CA65 which is roughly 4 years old and I just can’t believe that kawai tells me that I need to fix it myself. 4 year old DIGITAL piano?
I've just replaced all 88 pads, used ordinary felt 1mm (self adhesive), been now 2 months using it flawlessly, back to new yet better feeling I'd say. Will upload a vid soon if got the time.
@@DavidIzquierdoAzzouz Ive read about many working solutions, but im thinking about selling it, so that I never have to mess with Kawai again. Worst user Experience I had in my life except for crack.
@@DavidIzquierdoAzzouz did you ever upload video? What felt did you use? really want to repair mine permanently lol
@@howemusictuition I haven't uploaded any new vid but I basically used ordinary felt for furniture (like the one you put on chair's legs not to scratch your floor when dragging around), compressed synthetic felt, nothing special..
@@DavidIzquierdoAzzouz thanks for your reply, I was thinking of doing this with mine, as its nearing the end of its warranty -
Is it noisier when playing?
And have you had any other issues with the piano?
But what's exactly the 'sticky key' issue? It isn't demoed or explained, just started showing the repair procedure.
You're right, but people usually immediately realize what it is once they have this issue. However, it's when the key feels stiff and you can't push it down unless you press harder than normally, while having the feel it's sluggish and doesn't completely bounce up in a regular way, also it doesn't sound most times you press the affected key.. Ir happens to all brands if you research a bit you'll see what it exactly is
@@DavidIzquierdoAzzouz I see. It actually seems the same issue I've just found on my CA-65 then. I will try to follow your instructions and confirm that. Thank you for your efforts.
@@Synth_Tools you're welcome, wish you good luck 🤞
Bonjour merci pour cette vidéo. j'ai un kawai 260 avec bruit de larsen Comment puis je le démonter ?
Je suis désolé mais je ne sais pas comment vous aider puisque je ne l’ai fait que pour ce modèle et je soupçonne que tous les modèles ne partagent pas la même procédure
You're now ready to buy a casio Gp310 👍
Well it's a very appealing piano indeed, but for now I'll stick to the GF2 which is still pleasing to play. But after this experience, I'm surely considering other alternatives in the future (Roland among them)
@@DavidIzquierdoAzzouz wich model you would suggest? I have to buy a new piano and listening you, and following you from long time I was going to buy a CA97...but after what you wrote...now I'm definitely confused...I thought that GRAND FEEL II was the best...can you tell me some models that are similar in TOUCH? Thank you so much David! :)
@@cirogallo4078 well if it helps, I've been doing some research and apparently most pianos suffer sooner or later the same symptoms, meaning some maintenance is required, in my case I was frustrated because I thought that wouldn't happen to a mid-high range Kawai, but it wasn't the end of the world either. I can blindly recommend this beast, and would probably even buy it again, action is sublime and sounds are super editable, I got some sounds that I just cannot stop playing, so real and so adapted to my liking.. I don't wanna sound like advertising this brand, but truth must be said. However, there are some decent competitors out there you may want to try like PHA50 (Roland FP90 or RD2000), NWX (Yamaha P515) and casio GP series (hybrid action), those would be some I'd consider as an alternative, but honestly speaking I don't really think any of those is better than a CA98 in terms of price/quality, give them a try and let's know 😉
@@DavidIzquierdoAzzouz thank you very very much :) I will try also the other ones...but I think that I'll take a Kawai anyway hehe
موعلم 👌👏👏
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