I have an elderly DsTV decoder that I use to receive only the Free-To-Air channels, of which I only watc Botswana TV and France24.
Recently, my signal dropped to zero and I suspected the decoder was faulty so I took it to a friends house and plugged it in there.
It worked fine.
So that leaves the co-ax cable and the LNB (Low Noise Block) mounted on the dish.
I measured the voltage coming out of the co-ax at the LNB and noted that it changes, depending on whether Vertical or Horizaontal
polarisation is chosen, between 13V DC and 17v DC.
But still no incoming signal so I suspect the LNB itself is faulty.
Is there any way, apart from swapping the LNB, to test it? Can I plug a satelite tester into the LNB and what sort of signal can I expect?
Would the drop test work? Are there any active components inside that I could test?
Thanks for any help.