I hooked up my cable box but the tv says no signal on every input option. How can I fix that?

If you hookup your TV directly to the coaxial cable, bypassing the cable-box, do you get a few channels? If so, then the coaxial cable is carrying a signal, which is good.

How are you hooking the output from the cable-box to the input(s) on the TV? Coaxial output port on box to coaxial input port on TV?
Red/blue/green "component" outputs on box to matching inputs on TV? Red/White audio outputs on box to red/white inputs on TV? HMDI output from box to HDMI input on TV?

You have to "tell" the TV which of the inputs:
* coaxial (with TV set to Channel 3 or 4)
* component
* HDMI
to "listen" to.

cONNECT A REGULAR OR DIGITAL ANTENNA TO THE rf INPUT ON THE coby..
Do one or both of following.:
Connect rf output from copy to rf input of TV. (set both units to channel 3, or 4 --must match)
or connect three RCA connectors (either three cables or single cable with Yellow-Red and White connectors) to the matching
connectors on TV and COBY.

This might involve DISCONNECTING some connection from cable box.... but you may decide to keep both connected ( one item to each option as described above. ) The signals from the RED WHITE and YELLOW systems will be available on the TV when you set the TV for LINE input ( there might be more than one choice of LINE-IN selections on some TVs.

It could be the tuner in the set is the problem--there is since the rear inputs work fine a way to "get around this".

Get a Cable box that has the audio/video outputs on the rear and connect to one of the rear inputs on the set--want to watch cable--go to that input and use the box to change channels.

If the tuner is bad you are likely going to have to replace the entire board it is on--not cheap.

The rear inputs bypass the tuner and all the signal circuitry from it.

Also if signal routed via rear jacks you should notice a better picture and sound quality.

SD TECH

At the cable box input, connect the cable (probably labeled "Cable In" or "Signal In").

Depending on the cable box model and available inputs on your TV, connect one of the following (listed in descending order of video quality). Colored phono plugs must match the colors of the plugs on each end.:

• HDMI (a single rectangular connector at each end - sometimes you need to connect the Audio separately with a two - line cable with red and white phono plugs).
• YPbBr, AKA Component (Cable with Red, Blue and Green phono plugs, plus a separate Red and White cable set for Audio).
  
• S-video (a single round connector and separate Red and White audio cables).
• Composite (Yellow video cable plus Red and White audio cables, usually sold as a single set).
• RF out on the cable box connects to ANT or Cable In on the TV with a coax cable.
  

The various options are always grouped in some manner on both the Cable box and the TV. On the TV, note which input set you use, for example, "Component 1". This is the input you will select to watch whatever channel you select on the cable box.

An unused output on the cable box can go to a video recorder. Some cable boxes may permit setting up two different channels for this purpose; others will only put out the signal from one channel at a time on all outputs.

You may, if you prefer, connect the audio cable from the cable box to a stereo receiver instead of the TV. Usually people connect the audio to the TV, then connect another audio cable from "Audio Out" or "Monitor Out" on the TV to the stereo receiver. That way the sound is from whatever video source is currently selected, and the TV remote control can be used to set the volume. TV sets with this option usually have a setting to turn off the internal speakers so you hear only the external stereo speakers.

The white, yellow, and red RCA phono jacks on the back are called VGA inputs and outputs. The Red is
right channel audio, The white is for left channel audio. The yellow is the video. Look carefully on the back of the unit and the input jacks and output jacks should be clearly marked.

There are several other input/output ports. One is HDMI which is flat and wide. Another, not common, is composite video which uses the three above mentioned RCA jacks as indicated plus two more colored jacks. This combination gives a better picture.

A third option is a screwed on cable for input and output. This is called a "F" connector and is only used if the receiver equipment has a built in tuner. The output of a cable box is usually an "F" connector and the above described outputs

If you connect the cable box to the DVD player input and the DVD player output to the TV input, you often must have the DVD player turned on so the signal will feed to the TV.

If the TV has multiple inputs, it is best to connect the cable box to one of the TV inputs and the DVD player to another TV input. Using the TV remote you can chose which input you want to watch. The remote should have a button labeled "input"

I have the same receiver... You can try pressing the Option button and choosing Signal Info to see what audio signal the receiver sees and if that changes over time. Maybe the cable box is not outputting according to specifications... TV can live with that, but receiver maybe can't.
You can also try to connect the cable box via SPDIF cable (optical or coax) to see if it helps or not.

check out this diagram, paying close attention to the audio video cable hookups.

assume the cable tv box represents the converter box

you are going to come out of the converter box audio and video outputs into the new magnavox dvd/vcr combo audio and video inputs.

Then out of the new magnavox dvd/vcr combo outputs to the inputs on the tv if it has such inputs. The TV will have to operate on the video input 1 or 2 if the tv has such a thing, use the remote for the tv to adjust the input signal to line in 1 or 2 depending on what it has.

If the tv has no coaxial input or audio video inputs then you might have to use an adapter, you can get these from radio shack.

You say it will not record from the tv, but in all actuality the dvd vcr combo is getting the signal from the converter box not the tv, do you understand what I mean here?

So the dvd vcr combo gets input from the converter box so you will have to set it to view signal from the line input you have plugged in from the converter box. line 1 or 2 or whatever the input is.

the tv will have to be set on the line input to view the signal from the dvd vcr combo.

That is as easy as I can put it. Study the diagram closely. You will see what I mean.

Chances are you've got your DVD player hooked to OUPUT jacks on the cable box, not inputs. I haven't yet seen a box that takes any kind of an input other than the cable line, but they will have RCA jacks for audio and video outputs on the back. So your cable channels are fine, but the DVD signal is hitting a dead end.

The only solution if your TV doesn't have RCA inputs for video and audio is to get an RF converter (around $10-$20). This takes the A/V signals from your DVD and turns them into a channel 3 or 4 signal that connects to your TV's antenna input.

The converter also has a connector on the back for the cable coming from the cable box, since you'll have to disconnect that from the TV. When the DVD player is off, the cable box signal gets passed to the TV as normal. Turn on the DVD player and the RF converter switches on; put your set on channel 3 or 4 and you'll see your video.

One final thing: The converter will need an AC outlet for its power adapter or power cord, so make sure you have a spare. If you don't already have your TV and DVD player connected to one, this would be a good time to pick up a surge-protector outlet strip. Then not only will you have enough outlets, you'll be protecting your equipment as well.

If this solution has given you what you need, please take a moment to rate it appropriately. And thanks for asking here!

tv back cabinet to second hole to fixing cable hooked

From cable box,hook-up yellow,red and white to video input on TV ...Select that input, activate PIP...........Note:Split signal &
give 1/2 to cable box and 1/2 to Antenna A input on TV then hook RF out to tv to Antenna B................Let me know...T.