I have a Mitsubishi VS-45605 and recently had Direct TV connected to the house. The direct tv tech said it was all ready to go, but could not get a picture from the tv. we brought up another tv from downstairs, plugged it in, and direct tv was right there. The TV turns on, and i've tried all the input selections... Just can find a picture.. and I know that the direct tv components are working properly. Any thoughts?