Re: No DTS sound.
Jeff is right. The DVD spec makes DD a mandatory sound format and also requires players to either contain an analog mono, stereo or Dolby Pro Logic track (matrixed surround sound) or automatically downmix the DD track to an an analog format to be sent out over the red & white audio jacks. Since DTS is an optional format that requires specific hardware, there is no similar requirement for it. Hence you are listening to analog DPL when you select DD, and nothing when you select DTS, but you aren't getting digital audio no matter what you do.
I'm still betting the red cord is plugged into the component red out on the DVD player or the component red in on the TV. You may be getting basically mono DPL downmixed from the DD tracks via the white wire with the input from the red wire being ignored, but for some reason when he tries to listen to DTS a signal is coming down the red wire that is interfering with the color display.
That's the only thing I can think of that makes any sense.
BTW, looking at the manual for your receiver, I don't think you need the remote to assign the component inputs. It looks like they are preset to TV/Sat and DVD IN, but that you can
optionally assign them to the video 1 or video 2 ouputs if you prefer. It also appears that you can reach all of the menus needed to reassign digital audio inputs and component inputs from the front panel, so you shouldn't actually need the remote to do most of what you need to do.
Did you buy the receiver new or used? (I'm only wondering because it seems odd that you'd lack the remote.) Do you have the owner's manual? If not, you can view and download it
from this link.
Regards,
Joe