Only Getting One Channel

[FondantMoose]

Hi.

I can only access one channel (currently BBC 2 HD, but has also been one of BBC London HD/London Live/ITV 1 HD/Channel 4 HD before) with all other channels being a blue screen and then after a few seconds the message "There is a techincal fault with this channel" is displayed.

Signal Strength is at 50%.

Quality is nearly 100%.

Lock Indicator is OK

Network ID is 0002

Transport Stream is 0802, though it's also been 0800 and 0814. My Cousin who lives nearby has 074d...

Any ideas? Oh, and this is from a communal dish.

Thanks in advance for your help.

[Mark39]

Try Sky's help here: https://www.sky.com/help/articles/technical-fault-with-channel-sky-plus

[FondantMoose]

Rebooted like it suggests, and now I have no signal at all...

[Mr+Chumley+Warner]

Hi everyone,
My BBC 1 HD signal in the morning is signal strength nearly 100 %  & quality 75 % but nothing in the evening. Network ID is 0002/07fd. 
ITV 1 (Yorkshire) HD doesn't work at all no matter what time of day it is!
I've gone in to settings and added channels this seems to work but lost local news as it's not my ITV channel. 
Any suggestions ?  New LNB ?