I recently purchased a converter box and a DVD player for an old analog television that I hadn't been using. The converter box is an RCA STB7766C, and the DVD player is a Philips DVP1013. I got the converter up and running without any problems, but I haven't been able to figure out how to view a DVD. I think the problem is that I'm unable to set the converter box to either channel 3 or 4, which I think is necessary to view the DVD output. The converter box does not seem to have an option for manual channel scan, only automatic, and it skips channels 3 and 4 even if the DVD player is on, with a disc inserted and (apparently) playing. Do I have to buy a converter that does have manual scan, or is the problem someplace else entirely? Any tips for me, internet?