I have an HR10-250 that has been sitting in a closet since I deactivated it from D*. I plan on giving it away but I wanted to test it first and also remove old stored programs. I thought that it would be as simple as plugging it in and running the component cables to an old tv for testing but I can't bring anything up. What do I have to do with respect to connections. etc. to determine that this unit is still functional? Thanks.