Hi,
I'm still relatively new to all this, but I don't think simply connecting that drive would fry any circuitry.
Does the Plus do this when the 9 GB HD is disconnected?
Is the ZIP disk formatted properly for a Plus? If formatted incorrectly, a ZIP disk can cause a Sad Mac.
It's also possible that the voltages on the analog board are fluctuating due to aging capacitors. There's a voltage pot that you could try adjusting to temporarily combat this.
Other than that, I'm out of ideas.
c
I'm still relatively new to all this, but I don't think simply connecting that drive would fry any circuitry.
Does the Plus do this when the 9 GB HD is disconnected?
Is the ZIP disk formatted properly for a Plus? If formatted incorrectly, a ZIP disk can cause a Sad Mac.
It's also possible that the voltages on the analog board are fluctuating due to aging capacitors. There's a voltage pot that you could try adjusting to temporarily combat this.
Other than that, I'm out of ideas.
c