Have you been into the menu and checked your tuner configurations?
You need to identify the problem, either by checking your VU+ Solo 2 ona nother dish, or checking another receiver on your dish.
Without knowing how your dish is set up, and what happened, no one can help, all we are doing is guessing.
Why did everything have to be fixed, last week? Is this a new installation?
try contacting whoever fixed it up, for you.