Input LED'S A,C,D flashing

[error.eyes]

Octatrack MKII / INPUT C/D LED blinking without any input and nothing

Hi, I just picked up a used Octatrack mk2 in seemingly good condition. I noticed that the channel A/C lights on the input tracks were wavering green even though they weren’t plugged in. Monitoring them, yeah they’re pretty noisy for no reason with the noise gate at -inf. I find that to get rid of this I have to bring it up to about -50dB or so. When I plug in a stereo connection it sounds fine, which is good, no noise. When I plug a mono connection into A, no noise. When I plug a mono connectio…