[glennb]

Sounds like the box isn't getting any signal from the dish.

 

[glennb]

It's possible the dish might not have been tightened down to the mast securily. See if you can turn the dish left and right. With someone in the house monitoring the signal on the TV communicate via cell phone, yell out the window etc.. to let you know if the signal returns. If you can move it do it very slowly. It doesn't take much movement for it to have no signal strength, have high signal strength levels, lose signal strength again.