i have seen this elsewhere,so done a copy and paste to try.
hi, this will fix it for ntl area,,got two boxes working with it,, press menu
go to installions
auto search or 6952 symbol rate
change QAM to 256
search (wait till search is finished)
press ok
press exit twice(saving data)(if you pick up less than 200 channels try a 256 search again without a reset)
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go to sly sports 1 and type in 1819 on your remote,,,,,, got this off another forum,,,