My Clavinova CVP 405 needs mainboard replacement according to our Clavinova service center here in the Philippines. Unfortunately, they have not located a supplier yet. I searched for the part and Syntaur came up but I do not see specific mainboard in the list. Hope to find solution from members of this forum.
The pat numbe for the DM for CVP405 is WH511400.
Yamaha shows it is still in production, but is currently backordered . I could place the order for you, or you could try yourself at yamaha24x7.com. You will need to sign up for a consumer account first. I don’t know if your country can access this website. BTW the cost of this DM is $1,073.18…
email me pcm.tech808@gmail.com for details