Disklavier

Hello everybody I just recently joined this group and so far there seems to be such a wealth of knowledge for these systems. Here's my problem I've had the MX 80 now for three years and now nothing is working. There seems to be two LED lights that are lit up on the I/O board along with two but looks like burnt out diodes. Is there any place where I can buy a used I/O board instead of going directly through Yamaha?

Thx.