Okay, just some food for thought for those with the Insignia 24" Stereo TV and Comcast On-Demand Remote.
Tried codes associated with various TVs. Then tried ALL the codes; after you remove redundancies from the list of codes provided by Comcast, there are only about 58 unique codes. None worked. I continue to use the Insignia remote for on-off and volume. I can provide the list of 58 unique codes for those who are interested.
Comcast remote works perfectly with Panasonic DVD player; not at all with the Insignia 24".
Interesting.