The people who cite Stern as the model of quality and customer service is laughable. They've had all kinds of quality issues that they haven't stood behind and created huge PR disasters while people waited for some sort of resolution - ghosting, dimpling, cabinets splitting, spike issues, node board failures.
Let's do a little comparison. The Stern warranty is only 2 months and only covers the PCB and 9 months on the monitor. API is 3 months on *ALL* parts of the pinball machine except plastics, rubbers and posts and 1 year on the monitor. I had a plastic bust and API had new plastics shipped to me in 3 days at no cost to me.
This is the first bad node board from API that I've heard about. It's not like a there has been a flood of boards dying. API has bent over backwards to listen to their customers and to help their customers on this forum. Barry was great to deal with.
To the OP, you might want to check with Multimorphic to see if they would cover the part under their warranty. I'm not sure what the terms are but it's worth checking. Plus, the part might be cheaper directly from them.