Just in case there is a code for Emerson you missed:
10236
10180 11963 10463 10179 10171
10178 10282 11394 11944 10451
10177 11911 10280 10182 10183
10158 10181 10002 10017 10270
10623 10019 10039 10185 10154
10038 11928 11929 11904*
Codes listed with an asterisk (*) are possible alternate codes for your device. These alternate codes should operate the primary functions of your device in most cases (Power, Volume Up/Down, Mute).
If that does not work try this:
StepNSet
* Set the "Mode Switch" to the desired mode such as TV for a Television.
* Press and hold the "Mute" button and the "Select" button until the visible LED blinks twice.
* Enter the code "991" followed by the "device number"
1. for Televisions
2. for "AUX 1" devices - VCRs or DVDs
3. for "AUX 2" devices - Audio
* You can step through the setup codes for this mode by pressing the "Channel Up" key to go forward through the codes or pressing the "Channel Down" key to go back to the previous codes.
* You can try out each code by pressing one or more function keys such as power, volume or digit keys.
* When you've found the setup code that works for your device, press the "Select" key.
All this information is on directv.com