DirectTV RC65 Programming

you can key in your units and get the most likely codes at
http://www.directv.com/DTVAPP/global/contentPageIF.jsp?assetId=P4380036#h:620.480

Sense you do not know the make of the receiver I would do a code search. This is how you do it.

Automatic Programming
With automatic programming, the remote control tests all the codes available
on the Code List and assigns the correct code for the selected device.
Although this method can be more time-consuming, it eliminates the need to
look up codes and enter them manually.
1. T urn off the device with which you want to use the remote control.
2. Press and hold the corresponding button on the remote control
(TV, VCR, SAT, DVD, CAB or AUD) until POWER INDICATOR illuminates. The
remote control is in programming mode.
3. Press and release . The POWER INDICATOR flashes once and stays on
indicating the unit is in Power Scan mode.
4. Press CHANNEL + or CHANNEL - repeatedly until the device turns on.
5. When the device turns on, press OK to store the code.
Note:
• To exit without storing the code, press BACK.
• The unit will search for the next code or the previous code if you press
CHANNEL + or CHANNEL - after the device turns on.
6. Press any other button. If the device responds, the remote control has been
programmed. If the device does not respond, repeat steps 2-5.

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Try this: On the Tivo remote press and hold the TV Power button and the Directv/TIVO button at the same time. Hold both buttons down for about 4 seconds or until remote light stays red. Then press the channel up button until the tv turns off. You may press the button over 100 times. You need to go slow. When the TV turns off press the enter button (or select button).