Originally Posted by tk1234
Yes, the older remote will work the DCX3400, but, for some reason, the new DCX3400-specific remote does not use the same codes as the older remotes. And, when using the older remote, the programmable features, such as the 30-second skip, will not work.
The older remote is actually the one that I use. That is because the "Day +" (round red "C") and the "Day -" (round blue "B") buttons do not work on the new remote. Comcast techs and customer service in Denver do not know how to program the new remote to make them work for those buttons or additional programmable functions. They have given me two different ones, and neither would work with them. For now, that is not a problem, since I am using the old remote, but, for the future, who knows?
It seems the new DCX boxes work with more main remote codes, 00476, 01376, 01982 and maybe others.
01982 is the default code for the new grayish DCX remotes and only works on DCX boxes.
01376 is the default code for the common silver remotes, works on all DVR series of boxes (DCT, DCH, DCX).
00476 is an old Motorola box code that works all main functions of the box with the exception of a couple DVR functions (like 15skip back, my dvr, live tv, tuner swap). However Arrow down does the same as Live TV, Play also does 'day +', Stop does day -. The other couple missing buttons can be programmed into this code if desired. Works on all series of DVR boxes (DCT, DCH, DCX).
These codes can all be entered onto the new grayish remotes but the Cable button must first be 'unlocked' to change code. See the wiki toward the end on how to unlock the remote.