Confidential Mission gun problem

Some time ago, the guns of my CFM stopped registering, both the detection and the triggers. My first tought is a faulty gun PCB. I had a look but I don't see anything abnormal.
I think there is power, when I disconnect and reconnect the connector of the screen IR's, I see them lighting up briefly. I reseated all connectors but no change. The rest seems to work.

Does anybody know which parts could have failed. And in the worst case where can I find a replacement?

my first thought is a damaged cable.

I had the same problem, it was the ground cable that was damaged.

Hey,

In the meantime I found the problem, and it was indeed a defect in the ground wire combined with a bad connector in the guns.
Anyway thanks for the replay!