Taking apart a Yamaha P95 Digital Piano to fix random note issue

Hey folks, in todays video I repair a yamaha p95 digital piano that belongs to a client. The issue is that when they play chords, in particular an E chord just below middle "C", sometimes they can hear a Bb note. I found the issue and luckily is was a pretty easy fix! Thanks for watching.
#yamaha #piano #repair #musician

[@spinphoto]

I like your wheel cart :)

[@mearslab]

Thank you for noticing, I made it for the 85lb laminator I was repairing and it’s actually turned out to be pretty handy around the lab afterwards too!

[@spinphoto]

Wow! The housing will never, ever rattle with 79,000 screws in it

[@mearslab]

Yamaha’s answer to cabinet rattle, “screw it!”

[@reluctantapologist]

Yeah I just took mine apart there were like 58. Then I got it back together and realized I need to fix one more thing now...

[@Mukul_Adhikary]

​@@reluctantapologist😂😂

[@Mukul_Adhikary]

Thanks Sir 💗💗

[@mearslab]

Most welcome

[@user-gm4bc5jk6b]

For some time now, when I touch the body (except for the wooden part) or when I hit the keys a little hard, my piano makes a sound like a marble. This issue gets worse when I hold the pedal and play music.(I tried even when the piano is turned off and there is no electric current in it, it still makes this sound). What is the problem?
My piano model is clp725

[@mearslab]

Hi, I'm familiar with the CLP-275 model, but not that specific issue. Have you tried adjusting the rotator underneath the pedals? The rotator is like a big screw that provides support to the pedals so they don't contact the floor. The pedals also have springs inside of them which could get rusty and might make a sound like you are hearing. Here's a link for the manual, it discusses the rotator on page 8.
usa.yamaha.com/files/download/other_assets/3/1624383/csp295gp_en_om_b0.pdf

[@user-gm4bc5jk6b]

@@mearslabyou mean the problem is for Pedal floor adjuster ? It is completely attached to the floor. Shouldn't it be the same?