I tried to follow advice on this forum to access cable box settings by powering down the RNG-200 with my display device still on, then pressing the Menu button on the remote. Setting did not come up on screen so I tried using the Menu button on the box and still no settings on screen. What gives? Are these features of setting the box aspect, resolution, etc. no longer available?
Check any label on the box to verify it is actually a Motorola DCX-3400. I think the RNG200 can apply to several different models, not all of which are Motorola.