How to mend Yamaha Bought Second

My top Bflat on my Roland 4500 piano has suddenly ceased to work?

wrong plug?

How can i fix my yamaha keyboard, PSR 270?

my piano soft pedal wont work?

elka x30?

fix speaker?

Electric piano with clicking keys ?

Technics PR602 replacing the disc drive with hard drive?

need new cord?

How can I fix a keyboard with dead keys. ?

Need a main board for my pr370?

i have a ROLAND RD-150 with tow keys with no sound, can i fix it?

Hissing Sound?

How can I fix the back-light in the LCD screen in my Yamaha PSR-630 keyboar?

How can I fix my Yamaha Clavinova CVP-55?

Technics SX-PX554 no sound?

korg c 15s service manual?

No sound when I play my Technics SX PR170 digital Piano?

Technics SX-PR603, edelp for repair?

Technics Digital Piano PR370 sound problem?

how can I fix my Clavanova CLP-950 two keys make no sound?

Rec Mutipal tracks of music MD 4072?

Why do yahama use plastic key boards when their products are so expensive?

Ettor code in cvp 209?

My Yamaha P-200 sustain pedal function is 'sticking'?

No sound?

How can I fix my Electric Roland Piano - notes not playing?

yamaha keyboard PRS-70?

Sound Name Error on Technics Pr902 Piano?

technics pr902 popping and screen blank but lit. Any ideas please?