G'Day,
I gather that you are connected to LNB out and not IF out.
Suggest disconnect LNB at STB and measure voltage 13/18.
If not disconnect other set.
If Voltage 13/18, test co-ax for continuity and shorts.
Best to switch set off when changing co-ax.
Let me know how you go.
Kindest Regards, " The Druid ".........
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