I lost my remote and need to switch the tv so I can get Directv - how can I do this without my remote

Benny, Check the attached links, direct TV codes.
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DIRECTV Remote Control Code Lookup

How to Program DIRECTV Remote Control DIRECTV Support

DIRECTV Remote Setup to Change the TV Input Source

4 Simple Steps to Direct TV Remote Codes

http://www.remotecodelist.com/

Some TVs has the manual control to menu down right, on frame. Did you check?
Else, only way is to get a GOOD universal remote. The one used for DirecTV has a control of SOURCE.

Check this manual
http://tv.manualsonline.com/manuals/mfg/directv/rc64.html

First off, D12-100 is your direct TV Box, Not your TV. A D-12 -100 direct tv box is not an HD box and will only connect to your tv via a coaxial cable or av jacks (red, white, yellow).
If you have lost your remote for your tv and your direct tv remote does not operate it, then you should be able to find the manual buttons on your television somewhere along the edge of the screen.
Toggle inputs till your on "TV" then use the channel selection to toggle it up or down till it's on channel 3 or 4 for Direct tv, If that doesn't work toggle inputs again and try the AV inputs. And of course if you want to use another device toggle inputs to HDMI 1 or 2.

I have a Coby 46 inch tv and the code that works in my directv RC65 and RC65X remote is 11331

10 Steps to Program Your Directv Remote

1. Turn on television.

2. Locate the switch at the top of your remote that allows you to toggle between receiver, auxilary, and TV modes. Slide switch over to"TV".

3. Hold down MUTE and SELECT until a small green light at the top of the switch blinks twice.

4. Enter code 9911.

5. Press and release the CHANNEL UP button repeatedly until television turns off.

6. When TV turns off, press SELECT.

7. Next, press the power button. This should turn the TV back on.

8. With television on, press and hold down MUTE and SELECT again until the small light blinks twice (same as in step 3).

9. Entercode 960.

10. Slide switch back over to "DTV". Your remote is now ready to use!

I have a durabrand tv and I lost my remote. I need to take it off of video so that I can play my Directv. I need to know how can I get Directv to play and keep the video screen off without the remote