It looks like my mute circuit is burned out, so I'm going to attempt to replace the transistor that might fix that. But if that fails, I might as well get a backup circuit board.

Does anyone know where I could buy the circuit board? I'm having 2 problems -- I don't know how to find out what the part number is, and since I'm new, I don't know what good online shops offer Honda parts.

Thanks!

 

here's one online source. Disclaimer: I haven't bought anything from them.
It's all menu driven, and the radio dash controls are in component group "SWITCH"
(at least for 2001).
You may also be able to find a used one in the "for sale" forum.