No schematics like we're used to.
Flipper switches and coils on Node 8. Your slings and their associated switches are also on Node 8, along with some lights. I'm curious if your slings work when this is happening?
I'd start by reseating your Node 8 connectors. If that doesn't work, redownload and reflash. The node boards will apply any node updates when updating code.
If neither of these help, I'd call Stern tech support. They can probably walk you thru a procedure to test the node board or just advise you further.