Two places that you could try.

http://www.instrumentalparts.com/kurzweil-parts.html

http://syntaur.com/kurzweil_pc.html

If you don't see the parts listed, contact them directly to see if they can order them in.

Only other possible source is eBay if you find a damaged pC361 being sold off for parts.

My understanding is that Kurzweil won't sell individual parts to end users.

Gary

But Is this particularly part of the PC361? or can I use another PCB kurzweil Keyboard keyboard part?

I doubt it. Usually PC Boards are model specific.

Gary

I bought a new mainboard, now it's new again.

Glad to hear that it's fixed...

Gary