Some channels say there is no satellite signal

[Enjay1]

Some channels won't work. I get a message saying there is no satellite signal. Sky+HD box.  

It's channels like U&, MTV. Other channels like BBC, sky and itv work fine. 

I have followed the help instructions, performed a restart, checked cables and signal. All should be ok but still some channels say there is no signal. 

[Annie+UK]

See question Q23 in my Sky Plus F⋅A⋅Q for No Satellite Signal

"No Satellite Signal" is an error generated by your Sky box, it has nothing to do with broadband (Internet connectivity) and usually indicates an issue with one or more of the following:

• The Dish is misaligned (not all transponders are getting through, thus some channels may be affected and others not)
• The Tuners in the sky box
• The input sockets on the Sky box
• The plugs on the cables
• The cables themselves
• The Sockets on the dishes LNB
• The dishes LNB has gone faulty for the connections the box is using
• You have plugged your Sky+ box into a dish that is only compatible with Sky Q

Please Note: Sky+ is now a legacy/obsolete service that Sky are replacing with their newer services: Sky Q (all issues will be fixed during a Sky Q install), Sky Glass and Sky Stream

You may have to call out a local satellite installer ( at your own expense ), unless you already have Sky Protect insurance, to check/fix your system, another option is to move to Sky Q, as during the move all issues will be resolved as part of the install, there is also the option of Sky Glass or Sky Stream, if you want to move away from satellite TV and use the Internet

[GD1]

@Enjay1  A slightly misaligned dish can exhibit a loss of signal on channels that use a weaker european beam BBC, ITV etc use a UK focused beam so tend to be stornger signals.

In the event you would need to employ the services of  local satallite installer to check your dish as Sky no longer supports Sky+HD boxes.