Trying to program Shaw Atlas remote with cable box to control new RCA RLDEDV3988-A combo TV/DVD. Success in controlling TV functions but can't get it to recognize the built-in DVD player. DVD player works fine using RCA remote but would like the Shaw universal remote to be ... universal. Have tried going through the process of pressing the CH+ key until the device turns off - it worked for the TV but after about 20 minutes of CH+ on the DVD function, no luck. Any suggestions?