Yamaha YDP-S52 and pedals

Hi all,

some months ago I had a problem with the right pedal of my Yamaha YDP-S52.
I disassembled the pedal unit and I replaced the right capacitor with the one in the middle. The right pedal worked until yesterday !
Now I have the same problem and I want to replace the pedal unit.

My question is: where I can buy the pedal unit for my YDP-S52 ?
Alternatively I can replace only the electronic card “YAMAHA YD982” (see photo). But where to find this electronic card ?

Thanks for any help.
Miche