Macbuk's F1 position is identical to my boards, but my parts don't have color codes or that body color. They do have a resistance too low to easily measure. Anyone know if fuses come in green, color coded???

I've looked at some images of SE boards and I do not see any fuses either.

By the way, I figured out why the warnings on not doing hot ADB connects and disconnects. That filter block is a multi-section common mode choke, fine magnet wires wound together on a ferrite toroid. Disconnecting the current causes an inductive spike that can puncture the wire insulation and short multiple ADB signals together, hence Larry Pina's discussions on testing for shorts. The other SE/30 I/O ports are RC or C filtered, no inductance other than strays from wiring, so no substantial inductive spikes.