Quoted from herg:

Looks like I spoke too soon. On Saturday, half of my W6 board locked up twice, during consecutive games. I played again on Sunday, and it didn't repeat.
So, I have a very basic question, though it might be tough to know a definitive answer. Can a failing cable cause a mid-board lockup? Two lamps on W6 were still working, while the rest were locked.

Quoted from herg:

Mine were the horse and the crystal. Lock was locked.
I played one game and it did it again this evening, and I made sure to look at the lane leds which turned out to be working.
I then jumped past W6, and played five games with no more lockups. Was it coincidence, was it because I jumped past a bad board, or was it because I reseated the cable? I'm going to play some more games in the coming days, then put W6 back in the chain to see what happens.

Quoted from shimoda:

I finally had one of the smaller individual led boards go out. It's only a few months after warranty so now I have to pay but seriously, it seems ridiculous for something like this to fail within 18 months of build. Hope it isn't going to become a string of paying again for a machine when it should work longer than this.