Regarding the TVV channels not found during a scan: I had the same problem, one day I decided that I would like a new double LNB, installed it, did a new scan and ... no TVV channels found anymore (they worked perfectly with the old).
I started fiddling around with the disc alignment to get an even better signal, though MP said 100% for signal and quality.
Only 1 time it found TVV, but although strength and quality were 100%, channels were not viewable cause multiple glitches...
Finally put my old LNB back and no problems anymore...
So, in my case, it is signal related, as when I took a closer look at the new LNB, I noticed the signal/noise ratio isn't as good as the old one...
Cheers.
PS. I did the scanning on 19,2 without CAM as I'm using a s***cam
I started fiddling around with the disc alignment to get an even better signal, though MP said 100% for signal and quality.
Only 1 time it found TVV, but although strength and quality were 100%, channels were not viewable cause multiple glitches...
Finally put my old LNB back and no problems anymore...
So, in my case, it is signal related, as when I took a closer look at the new LNB, I noticed the signal/noise ratio isn't as good as the old one...
Cheers.
PS. I did the scanning on 19,2 without CAM as I'm using a s***cam