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Amazon.com: UpBright 9.5V AC/DC Adapter Compatible with Casio LK-130 LK-130ES LK-135 LK-135ST LK-136 CTK-3400SK CTK-3500 CTK-5200 CTK-5200ES LK130ES LK135 LK136 CTK3400SK CTK3500 Piano Keyboard Power Supply Cord : Musical Instruments
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Amazon.com: OMNIHIL 8 Feet AC/DC Power Adapter Compatible with CASIO CTK- 3400SK, CTK-3500, CTK-4400, CTK-5200 Power Supply Charger Adaptor : Musical Instruments
![Casio CTK 3400SK 61-Touch Response Keys, Hobbies & Toys, Music & Media, Musical Instruments on Carousell Casio CTK 3400SK 61-Touch Response Keys, Hobbies & Toys, Music & Media, Musical Instruments on Carousell](https://media.karousell.com/media/photos/products/2022/6/3/casio_ctk_3400sk_61touch_respo_1654243598_9f121435_progressive.jpg)
Casio CTK 3400SK 61-Touch Response Keys, Hobbies & Toys, Music & Media, Musical Instruments on Carousell
![I bought a used CASIO CTK-3400SK keyboard it makes a "click" sound when I release the keys, affecting the sound quality during recordings. I don't know how to solve this problem and I bought a used CASIO CTK-3400SK keyboard it makes a "click" sound when I release the keys, affecting the sound quality during recordings. I don't know how to solve this problem and](https://external-preview.redd.it/i-bought-a-used-casio-ctk-3400sk-keyboard-it-makes-a-click-v0-WMc0zIteT9OZ5R928OXiJpbMEdEEC1_dvNKrg-gLy1c.png?format=pjpg&auto=webp&s=a23b2bf2d66d2a1e760525913bcc325ad279af83)