another lnb question ..sorry

[father ted]

i manged after a long while to get my motorised dish operational,it is 1 meter dish running off an openmedia box ,my problem is on some of the channels i am getting either freeze or pixilation ,i can watch a film channel for 1hr or nearly 2 and i dont get any problem and near the end (just sometimes)it will either freeze or start to pixilate badly is this down to lnb?when i bought system it was cheap and am asuming they put in the cheapest of lnb ,the cable has all beed renewed so im sure its not that,could it be slightly off?i get where i am 12 satalites any help please

 

[AM556]

It could be a problem with the LNB, heat related after long use. However, it is more than likely an alignment problem, either dish or LNB. If you have aligned the dish correctly, have you tuned the LNB (in and out) to focus correctly at the dish and is it vertical in the mount?