How to mend Key Electronic Buttons

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

How can I fix a keyboard with dead keys. ?

Rec Mutipal tracks of music MD 4072?

How can i fix my yamaha keyboard, PSR 270?

fix speaker?

Sound Name Error on Technics Pr902 Piano?

No sound?

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

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

Technics PR602 replacing the disc drive with hard drive?

Technics Digital Piano PR370 sound problem?

need new cord?

yamaha keyboard PRS-70?

my piano soft pedal wont work?

Ettor code in cvp 209?

Technics SX-PX554 no sound?

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

How can I fix my Yamaha Clavinova CVP-55?

wrong plug?

korg c 15s service manual?

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

Electric piano with clicking keys ?

Need a main board for my pr370?

elka x30?

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

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

Technics SX-PR603, edelp for repair?

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

Hissing Sound?

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