[nater1217]

I'm having some issues with an Indigo2 I got recently.
When I first got it and was using it, everything seemed to work fine, but now, the keyboard is not detected.
I had a spare motherboard, so I put that in, but the symptoms stayed the same.
I also had a spare keyboard daughtercard, so I put that in with the original motherboard, and with that one it doesn't complain that the keyboard isn't detected, but it doesn't work at all. Even with the keyboard disconnected, it won't drop to a serial console.

It seems like I may have two damaged Keyboard daughtercards? Throughout this process I also tried a different power supply and different RAM.
There isn't much on these cards except what looks like a lot of passives. Are these inductors (based on the L label for the components) or capacitors?

I looked at the data and clock signals with a scope and I can see the keyboard connector gets the initialization signal, and can see the signals from the keyboard on the bottom of the motherboard when probing the connector.

Any ideas for additional troubleshooting before I tear down one of my working systems? That always makes me nervous.