How to mend Yamaha Psr-3000

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

elka x30?

Technics SX-PX554 no sound?

No sound?

How can I fix a keyboard with dead keys. ?

Sound Name Error on Technics Pr902 Piano?

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wrong plug?

Need a main board for my pr370?

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

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

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

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How can i fix my yamaha keyboard, PSR 270?

Hissing Sound?

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

Technics PR602 replacing the disc drive with hard drive?

need new cord?

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

fix speaker?

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

Electric piano with clicking keys ?

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

my piano soft pedal wont work?

How can I fix my Yamaha Clavinova CVP-55?

Ettor code in cvp 209?

Technics SX-PR603, edelp for repair?

korg c 15s service manual?