hardly any sound from my Yamaha Clavinova CLP 50

by Barth Pruim
(Bivange, Luxembourg, Europe)

Hi,

One day, suddenly and without any obvious reasons, my Clavinova CLP 50 lost all sound apart from a very, very faint elongated noise when the volume is set to maximum (as if the right pedal is pressed). I have tried with ear phones, no change. I have tried to use the outline to my amplifier, no change. I have opened the case to see if any fuse needed to be replaced, they are all fine. The interior looks fine to me, no dust, no liquid, nothing to indicate any default. A salesman at the place where I bought the Clavinova, about 12 years ago (Piano Kleber in Luxembourg) told me, after telling them the problem on the phone, that Yamaha doesn't produce the part anymore which causes the problem. I don't believe that, he hadn't seen the piano. I think they just aren't interested into repairing this kind of pianos anymore.
What would be the problem, I am desperate to know as I love the piano.

Thanks very much for your answer. I attach a photograph of the electronic section.

Barth Pruim
8a, rue Edward Steichen
L-3324 Bivange
Luxembourg
barth.pruim@vo.lu