I want to connect to a TV that;s already connected to a cable tv box

Cable box not changing channels on VIZIO TV - Comcast Help and ...

forums.xfinity.com/.../Cable-box-not-changing-channels...TV/.../164607...

Apr 3, 2013 - I was able to connect my cable box and activate it without an issue. ... My problem lies in that the cable box will not change channels. Channel 8 comes in ..... I just unplugged the DTA ( you already did) and I let it sit for a while. No Audio with cable tv
Nov 15, 2012
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Connecting Cable Service, Satellite Service, or Antenna ...

vizhdtv.com/connecting-cable-service-satellite-service-or-antenna-chann...

Mar 10, 2015 - If you are connecting your cable or satellite box using an HDMI cordyou will ... You just need to change the input of your TV then scan for channels. ... Except the Vizio TV will not receive a channel that all the other TVs get.

Have you tried a different HDMI input on the TV? Are you sure you've selected the correct HDMI input? Make sure there are no component cables connected to the cable box. Occasionally that will disable the HDMI output.

you have to connect the tv tuner directly to the coax cable coming in. The receiver will not tune tv channels. You can then connect the tv to the receiver via optical cable

You only need coaxial cable to pick up TV stations broadcast via an aerial. If your TV has sockets to connect via HDMI or SCART, then any players can be connected via them. So if the adapter box picks up TV signals, you connect the main aerial cable to that and it should have a coaxial out socket, that should be connected to the aerial in of your TV. If you are recording to an analogue video from the adapter box, then that will need to be connected via a scart socket or other connection.

There are two ways of connecting to get cable TV audio from your Home Theater System.
1) If your HD cable box has a digital audio out ( either optical or coaxial ) you can connect this to the Samsung Home Theater Systems digital input. While watching a TV channel scroll through the Samsungs input ( source ) selector till you hear the sound. Remember to mute the TV sound while you are doing this.Most probably it will be the CBL/SAT input or Video AUX.
2) If your HD box does not have digital audio out you can connect the Red & White audio out of the same to your Samsungs Aux or TV or Video audio inputs . Ignore the yellow socket and connect only the Red and White audio inputs.For getting Video through the TV connect the HD box to TV via HDMI cable or connect the Yellow video out to the TV's Yellow video in. I am sure it is already connected .

Can you tell me what type of TV you're trying to connect to your set top box? Also, are you looking to buy new cables or use cables that you already own?

if the Comcast cable box has an HDMI output, it should connect directly to one of the TV HDMI inputs. Then connect the LG DVD unit HDMI output to the second HDMI input of the TV. Use two HDMI cables. Do not buy the expensive Monster HDMI cables. If you have already done so, I recommend you take it back for a refund, then buy the low cost HDMI cables which will work just as good and then you can bank the savings toward a new Porsche Boxter!! Now we have the video connected from both the cable box and the LG system.

Now--what do you do if the cable box does not have an HDMI output--just use its component output and your component cable (red, blue and green) to connect to the TV component input. This will still get the video to the TV and good HD pictures. Hum--do you have an HD cable box? You did not say and I just assumed that you did since you got the HDTV. If not, let me know with a follow up question and I will assist in that area further.

Now for the audio connections--The DVD player will not need any connections since it in the LG unit. The sound will come out the speakers when you start playing the DVD. The cable box is where we get the TV audio to feed the LG unit. If the cable box has an optical output, use an optical cable (again the low cost one)and connect to the optical input on the LG.
This will get the TV audio to the surround system. If no optical output, use the red and white (left/right) audio connections and connect to one of the two the LG audio inputs. To hear TV audio on the LG speakers, just switch to that input or the input associated with the optical input.

To watch DVDs, switch the TV to the HDMI input to which you connected the LG unit. For TV, go to the other HDMI input (or component input).
Switch the LG to the audio input to which you connected the cable box to get TV sound.

Hope this gives you food for thought. If so, and you have more questions, just come back in with a follow up.

dont know if it helps,but try connecting audio cables to the dvd from tv. worked for me !

I found that since the Panasonic TH50PZ80U TV has only 2 HDMI ports on the back of the TV, the best solution for me was to use component (red, blue, green) cables to connect the Home Theatre to the TV. I suppose I/you could connect the home theatre to the HDMI port on the front panel, but I don't want cables hanging out the front of the TV (personal preference). Unfortunately, I am no longer able to use the VIERA Link functionality available by connecting all Panasonic components to each other using HDMI cables, but I feel it's a small price to pay for the incredible picture quality acheived by using the HDMI cable to connect the HD Cable Box to the TV. I may yet be able to control everything using the HD Cable Box remote, but I haven't gotten that far yet but I've got Comcast coming on Saturday and hopefully they can let me know if this is possible: let me know if you have a solution.

So here are the components and the cable types used to connect:

1. HD Cable Box to TV: HDMI cable & Optical Audio cable
2. Home Theatre to TV: Red, Blue & Green component cables
3. BluRay Player to TV: HDMI cable

I hope this helps someone else.