003r clicking sound and unwanted signal on input 1

[003user]

Hello

My DIGI003 rack seems to have an issue.

On Input 1, when I engange record enable / monitor input (in the software) I hear a clicking sound and a very low inaudible signal comes through. I can see this signal in pro tools / logic / ableton in the mixer: constant signal at minus 6db. I can modulate the signal with an EQ plugin.

When I enable / disable HPF on the front of the 003, I hear the same clicking sound. The HPF cuts the signal drastically.

External sound from hardware sampler comes through the DI input. Albeit a bit lower in volume than channel 2, 3 and 4.

Disconnecting / connecting a jack doesnt change this behavior.

I also hear the same clicking sound when I press play in Logic 9 when the input monitor is ON.

What could be the problem? By the looks of it, it appears to be a digital error.

Thank you.