After chatting with comcast online for over 30 minutes here is the best answer i found : I work at al call center, and virtually all Funai made tvs, including Emersons, don't work with any but their original remote. The reason for that from what I heard, is that these tvs are geared towards the asian standard, not the american star\ndard, for reception frequency. The remote wont work with the tv if the frequencies don't match. That seems to happen with most of the 2nd and 3rd tier brands as well. U will have to call Funai customer support and get the parts dept. or go to 1-800 remotes. ( this entry is from FixYa.com) I thought it might help those people like me who knew they were programming it correctly. U fortunately have to have original remote .
11864 works for Emerson LCD TVs and the new Digital Transport Adapter remotes that are now required (as of August 2011). Thanks for the person below for suggesting that code -- I went through the code search and eventually stumbled across a code but could never retrieve it.
I found that 11864 works with my Emerson set. The problem is in the small fold out paper they give you with the hardware does not have 11864 listed. I lucked out and found the code online, Good luck!!!
Just connected my new devices, none of the codes on the Comcast remote provided work on Emerson model #s LC321EM9 e or Emerson LC320EMX the remote codes in the instructions don't make the remote work. Not real happy with the changes or having to install the converters.