I have had some trouble for some weeks but the last couple of weeks the signal seems worse. I have a freeview box upstairs and that started playing up and that is connected to the same dish. It started to lose channels and now I cannot get a picture at all on the TV upstairs. It did strangely come on the other night and I watched a film and then I turned the TV off and back on again and no TV again. I have checked the cables and they seem fine. The dish is on a pole with a dish for satellite internet and that seems fine which indicates to me that it isn't anything to do with the pole moving. So, I am of the opinion, not that I know anything about these sort of things that it could be the LNB. It is a quad LNB. Two connections to the Humax and one to the freeview box. I suppose I need to check whether the dish has moved, but if it isn't the dish could it be the LNB? When I do a diagnostic on the TV downstairs the signal strength and quality is very poor on tuner 1 10/50% but great on tuner 2. Any help would be appreciated.
I suspect that the box upstairs is a Freesat box; a Freeview box requires a feed from an aerial, not a dish.
The problem you are seeing may be caused by water in the cables, if they are not sealed at the LNB. The LNB may be failing, but dish misalignment is more likely.
As there is an unused output on the LNB, try swapping one of the feeds with a poor signal to it.
Testimonial: "Thanks for your feedback. The freeview box is connected to the dish because I am in France and it is the only way to receive TV. I thought it might be the LNB and I have tried swapping the feeds and nothing works. I am of the opinion that it could be the freeview box that has given up the ghost. The humax box is working and the dish alignment is spot on so I think it is a new freeview box!"
SOURCE: Changed from single to twin LNB, no signal
HELLO
Here is a suggestion! Try SKEWING the LNB around a few degrees. Looking at the front of the dish, turn your LNB to the LEFT slightly (that is anti-clockwise).
Sometimes it's the little things that matter most where installation is concerned. It is also possible that due to the weight of the new LNB, the alignment may be out.
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