Problem finding Italian channels on Hotbird... HEL

Dear Forum Members,

Hope you could help me with the following...

I had my satellite dish pointed into the direction of Hotbird 13 (I live in Twickenham) and was enjoying Italian TV (Free to air). At one point (back in November!) the signal disappeared and this weekend I've changed the LNB as it was damaged.

Now the signal intensity is back (65-80%) and the signal quality is around 45-50% according to the stats that appear on the screen.

Unfortunately though it looks like I cannot capture the main Italian channels (RAI Uno, Raid, Due, Canale 5 etc.) anymore. The signal strenghts seems to be there (there's a little dot on the decoder that appears for those channels where the signal is present), but there's no sound or picture.

Instead it looks like I'm picking up a lot of African/Middle-Eastern channhel (Al Bashara, ETN, and many many others) + small Italian TV like Nessuno TV + swisse channels CH 3.

I'm a bit at a loss here... and surely not a subject matter expert, so I would gladly welcome any help/direction you guys could provide.

Many thanks in advance!!

Regards,

Mirco