Loss Of Satellite Channels

This last week I have lost ITV3 and ITV4 channels on the satellite.
Its strange as I can still get ITV3+1 and ITV4+1 I've done a blind scan, but still have the problem.
Does anyone have a solution?

Check that your recieveris HD, if not that check re-alignment.

what make and model is you sat box

Its a Ariva 52E about 10 years old.

That is supposed to be an HD sat reciever so maybe dish has moved

Nothing has changed with the satellites so whatever's wrong it'll be at your end.

Tune-in to Channel 799 to test whether your satellite box is compatible with HD

i have BBC1HD, BBC2HD and a few more channels. I may have to get an engineer in as the dish could've moved. By the way I have a 1.4 dish. Any recommendations?

Get a 1.9 dish problem solved if dish is the fault

I had a similar problem last year. Resolved by having a better quality LNB fitted on the dish