Look at the back of your comcast box. See if there's a ch3/4 switch. Make sure it is on ch3. Also make sure the cables are going in the right order. If you have a lot of stuff, simplify your connection -- wall to comcast box to TV. Once that works, add in the DVD player, etc.
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If that doesnt work I have another solution for. Westinghouse flat panel TV
TV 10812 probably has the correct IRsignalsfor enter programmed to the ok/select button. However the comcast and access remotes are intended to control a cable system so even in tv mode the remote sends the digit, ch+1and enter signals to the set top box.
There are two ways to defeat this.
1)Turn off channel lock. Sethe 9xx comand for this.
OR2) Assign a EFC for the Enter signal to the device mode.
1) Press TV
2) PRESS SETUP UNTIL IT BLINKS TWICE.
3) Enter 994 (two blinks)
4) Tap setup(DO NOT HOLD)
5) Enter 00069
6) Press ok/select.
The remote should blink twice and the ok/select button should work in the tv mode.
Use 1 unlessyou're going to use remote with cable box.
I hope this works...
Connect the TV to the Comcast box using an HDMI cable, then set input on the TV to HDMI - that's all. You then select channels on the Comcast box , not the TV (although the TV remote can be programmed to change channels on the cable box)>
I have a Trutech 10 inch under cabinet DVD/TV and needed the codes for the new Digital Adapter that Comcast is forcing everyone to move to. The short answer is that there isn't a single code that will work for what we all need. After much research I have an answer. It's largely unsatisfactory, but its somewhat of a work around. If you use code 10451 you can get the channel up, channel down, the number pad and the "last" button to work. To get volume functional, change the volume lock on the comcast box. To do this:
1. With the TV on, manually set the volume to a medium high setting
2. With the comcast remote, press and hold SET until the red light blinks twice.
3. Enter 9-9-3 (red light blinks twice)
4. Press and release the digit 1 (red light will blink 4 times)
Now, in addition to channel control, you have volume control. I can't do anything about the power button or other functions. However, this at least makes the remote functional.