Unearthing this post because as the new owner of this same pin I've run into the exact same issue. However I've reseated all ethernet cables and even one by one tested swapping a different ethernet cable in and I still consistently get a Node 9 board failure. Doesn't seem to be board if swapping 8 and 9 (which I did again just to be sure) still throws an issue with Node 9. Anyone have any ideas on where I might look?

Yeah, all the cables click in for sure. Service bulletin has not been installed, but I feel like if it was any hardware issue on the board swapping 8 and 9 and changing dip switch should have shown 8 out, no? Maybe a particular mod is drawing too much power? I think I read someone else had an issue randomly with a particular LED not playing nice and causing a node to fail. VolunteerPin Do you remember what if any mods tap into boards on the underside of the PF?

My plan is to replace all ethernet cables to rule that out (I have a handful here that might be enough). Given I swapped 8 and 9 and with all switches/lights/etc disconnected from the node boards 8 boots and 9 doesn't still I have to believe it is not the board but a communication issue. Just odd it wouldn't be a single ethernet connection (since I've already gone one by one with a spare cable through every connection). This is definitely a curious one.

Well I went one further and bought a replacement node board from Cointaker and pulled all my spare ethernet cables I had and ran everything with them. Neither fixes the issue. Unless anyone has any ideas my next step is going to be top to bottom reseating every cable I can see. If it's not the Cat5 or the board itself I can't think of what the issue might be.

Sorry to keep bumping this thread, just seems the right place to keep working through my thoughts on this since it's the same machine. I wondered about power draw as one explanation of the board not booting and why switching boards wouldn't fix it so broke out the multimeter and checked power on the node board. When the power connector is plugged in I'm only reading 5v there where it should be 48 right? Node 8 has a full 48v when plugged in. If I unplug the power connector and read it I get 43v coming out of the connector. So it sounds like something is drawing too much power. Am I on the right path with that line of thinking?

I was reading CN6 which I think is power to the board itself.

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Ah but Node 9 is all LED control so it makes sense that it's lowering it to 5v when connected. Well there goes that idea.

Ugh, I swear I took I swapped out every ethernet cable and had no change, but just now I decided to hook nothing but Node 9 to the CPU and it booted it, so then I worked backwards from there and sure enough the cable between 8 and 9 was the culprit. Maybe the new Node board was necessary as well, who knows. Whole thing boots now so it definitely was a communication issue but no idea where in the process of troubleshooting by replacing all ethernet cables I screwed up unless one of my cables was unreliable and I didn't catch it. Crazy, but glad to see that playfield light back up!

I did! That's what I can't figure out, I disconnected every single cable and ran my own. Maybe one of my own happened to be bad. I also did all that before I got a new node board, but I still think the issue feels very much like a communication one like VolunteerPin said so I must have missed something when testing all the cables. Crazy, but very glad to be playing it again.

Yep, perfectly smooth playing now. Can't believe in the end it was just a Cat5 cable, swear I went through every cable originally. But glad to be back at it and put up a high score of 385m just this week.