How to mend ... Circuit Full Advise

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

need new cord?

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

Need a main board for my pr370?

Technics Digital Piano PR370 sound problem?

korg c 15s service manual?

How can i fix my yamaha keyboard, PSR 270?

How can I fix my Yamaha Clavinova CVP-55?

Rec Mutipal tracks of music MD 4072?

No sound?

wrong plug?

Sound Name Error on Technics Pr902 Piano?

my piano soft pedal wont work?

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

Technics SX-PR603, edelp for repair?

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

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

Technics SX-PX554 no sound?

Hissing Sound?

elka x30?

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

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

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

fix speaker?

yamaha keyboard PRS-70?

Ettor code in cvp 209?

Technics PR602 replacing the disc drive with hard drive?

How can I fix a keyboard with dead keys. ?

Electric piano with clicking keys ?

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