This is the issue I have with "professional" installers. You can tell that the installer would have rather jerry rig everything on the roof rather than do it nicely.
Paulyme- The blue box is a switch that takes the 4 outputs from the satellite dish and "splits" them into more outputs. Your switch is a 5x8, which means you have 5 inputs, 4 from the satellite and 1 from an antenna (looks like you only have 4 inputs from the dish into the switch, no antenna into the switch.) The side of the switch closer to the dish is your outputs, looks like you have 5 cables coming off of that?
Those 5 cables go to the various recievers in your home. Your HD reciever only requires 1 input. I do not use Tivos but i think they require more?
The way i think this should have been done would be to have the dish installed with the 4 cables from the dish into the house with the switch in the house. From the switch your cables would run to your various recievers in the house.
For one, it certainly does not look like your equipment is grounded. It looks like the "professional" that put this in just connected the dish right to the switch without grounding it, which is required by law. The grounding is very important for something like this, especially for a dish on the roof. If that gets hit by lightening, certianly say goodbye to all your equipment. Grounding is not really to protect equipment, but it is to protect you and your family.
It looks as if this was installed recently? I would most certainly call directv and let them know that this installer did a shoddy job and you want it totally re-done with the wires in the house and it certainly grounded. If they are not willing to install things to code than they certainly should not have a license to be doing this to peoples homes and putting your family in danger.
Does that switch require power? I cannot see any power input on it. I thought all 5x8's needed power?