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  Opening Yamaha p 80 Well Yamaha P80 is really easy to open and access the keys if you need to repair or replace them.  So you should do like I did in the picture:

  Yamaha P 80 digital piano repair  Here I will explain how you can repair the key for your Yamaha P80 piano at minimum cost.  All you need for this is a candle, needle, and pilers and all of us have those things at home so before you quit reading (if you probably thinking "What is this fool writing here") I just wanna tell you that you have nothing to lose if you try this.  Your key is probably damaged and won't go back to regular position after you press it, or it will be back but slower than it should be.  So why that happens?  Here I will explain everything about how keys work and how they usually get damaged.  Look at this photo: