Canon LBP-860 formatter board

All,

After many years of service, my Canon LBP-860 started refusing to print.
I took it to the local printer repair shop, and they say it needs a new
formatter board, BUT they can't get one. This printer is mostly the
same as an HP Laserjet 4, but printerworks.com says it takes a unique
formatter board, which they don't have either. I tried eBay with no
luck.

Are there any other "usual suspects" for parts like this? Or am I
out of luck?

Thanks!

Matt Roberds