Winegard will work with you to diagnose the problem via email from their website. I had to send my CarryOut back to them for repair - they will not sell you any parts.
I was in the local UPS store and asked what it would cost to send a 2 cu ft box to Davenport IA from St Louis. They said $72 as I remember. Next stop was the Post Office where they said $27 for the same box. That's the way I sent it. When it came back it was in box that measured 23"x23"x17" and their cost was $17.
They charge $70 up front for troubleshooting. They'll probably sell you a new cord (they always do). One of the controller boards was bad - they replaced the bad components - cost from them was less than $5. I was amazed someone today actually repairs circuit boards at the component level.