GPS-RTK2 bricked?

My GPS-RTK2 no longer sees any satellites. It was working, but now it isn’t.

I’ve tried connecting a different antenna. but it still sees nothing.

I can connect the U-Centre to it and change the settings, so the input channel is working.

I’ve reloaded the firmware and checked that the correct messages are enabled.

I get a small number of messages out (so the output channel is working), but not the satellite observations.

Given all that, my guess is that the part that carries the signal from the antenna port into the the ZED-F9P chip is not working.

Can you suggest any other moves that might get it working again?

Those use an active antenna…did it happen to short on something? Also, the connectors on those are extremely fragile/tempermental…do you have another active antenna you can swap in and use to test?