Have you changed anything since the Bad or no signal message, (dish moved, LNB crap out, etc.)
Also is it the original Power adapter that came with the Receiver ? If so it needs to be changed out to one that has more power
You need one that's 12v 4-6amp for the T5 to operate Properly, You can get them on Amazon, Princess Auto, Ebay, etc.
With that "ALL FTA BOXES" Need Cooling Measures installed (Fans) I have a set of USB powered Portable Fans that sit on top of "ALL MY BOXES" that I use keeping them nice & "COOL" No heat issues, which can be a Killer to the Cheap components that they install inside them.