Akai Apc 40: No Led-Feedback

[Mondmöwe]

Hi,
I need help with my Midi-Controller: Akai apc 40
Arena Resolume 7.21.3
MacbookPro M2 Max, 2021, Sonoma 14.6.1

I have an old Akai Apc 40 controller:, which I got from a friend. I can do the midi-mapping, knobs & buttons are working, but there is no light-feedback to the controller. So even if I press a button > the clip is playing, the button wont light up to show which clip is played
I checked in the preferences Midi Output is activated.
Is there an option to make this work? and if not is there an other controller that works smoother?

Thanks in advance

I already checked the internet & ChatGpt, haven’t found a solution yet.

[producation]

Did you only activate the output channel or did you also map it?
If not here is a video that might help. It's for the APC40mk2 but the workflow should be the same.
https://www.youtube.com/watch?v=8Uuki86pCOw

[Sjan Top]

In resolume you need to set the midi clock out, so it sends midi back to your APC40 Mll.
https://resolume.com/support/en/midi-shortcuts
If that does not do anything it is possible that there some resistor lose on the print board of you APC40.
That can easily happen, APC40 Mll are not shock proof. Had to get mein fixed after a slow drop of 50cm.