FlexRadio6400 TX problem, please help

Cees

Because I doubt whether my FlexRadio 6400 is still providing output,

SmartSDR version 3, I activate the TUNE knob from the TX window.
In Tune, I see an extremely poor SWR at low power; naturally, the result is zero output.

This also occurs with installed programs like N1MM WSJTx.
My RX streams, Slice A in DAX, are fine streaming.

To ensure that all connected components are not the cause, I have disconnected the TX connection.

I previously measured all possible causes, such as the antenna SWR, bad coax, and bad dummy load, using my cable and antenna analyzer; they do not constitute the problem.

In short, I cannot generate any power.

Another cause could be incorrect SmartSdr settings. I am not sure about that and am certainly not an expert,

In the CAT window:

CAT port protocol
TCP port: 5002, TCP

Slide A:TX in CW mode in CW frequency range

TX: SO2R_TX1

I am looking for one of the expert members who can help me with my problem.

Cees, PA3CVI