Tv has no signal

on some universal remotes, you can turn on the tv manually, then push search on the remote.. it will flash the light on the remote face when it finds the code.. then push the power on/off and see if the tv turns off..if it does, the rest of the funtions should work..

Test ur tv remote control first see,if it is working,malfuctions or completely dead?U have a Digital Camer wright?Yes.Digital Camera can read Infer Red signal Output by the tv remote.Yes?Turn the Digital Camera on and take the tv remote point it at the Digital camer and pushes all the remote buttons the Infer Red signal will read all buttons Infer Red signal flashes u can see on Digital Camer viewing screen.Pushes all remote buttons see flashes of white lights.Mean the tv remote control it it good or not.Take some cottons ball soak it with some rubbing alchachol clean the tv Infered Red sensor on the tv frame near the power LED incation light.Might be dirty,Still not reading the Infer Red signal.If 100% it is the tv remote control is the cause,it CPU is dead.Try website like Remotes.com to buy another the tv original remote.

try main board as it controls all picture funtion. does the screen still light up? no picture...ect..

What is the make and model of this TV?
LG?
You need some verification first.
Testing remote control:
The remote control puts out IR (InfraRed) signal that human eyes cannot see, to find out if the remote is sending out the signal or not you just point the remote at the digital camera's Lens (Digital Camera can detect IR), you should see flashing light on the camera's screen when any one of the remote button is pushed. If you do see the flashing on the camera, then the problem is in the TV IR receiver or the main logic board; more troubleshooting with scope will be needed to look at the signals.
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The remote control is an acess to the TV device for example only from a distance. A remote controll for functionality would require to insert batteries a power source making possible communiction with devices requiring reception transmittion of signals. The remote is handheld pointed to the direction of TV requiring signal before button pressed woudl achieve response. a common button to start the remote control experience is pressing on the power button, that displays a signal on the TV. The TV should momentarily produce a sound and lighting effect,, and displaying on the dark screen a light blue screen. The initial signal response from remote control to TV indicates devices are functioning as required. Additional buttons on the remote controll could perform functions of several available.
The remote control has master button, menu on which every additional function is deriveable. Once the menu button is pressed with remote pointed in the direction of TV, should dicplay a list of options on the blue screen already established by power button. Every additional remote control device functionality is achievable by only after the first two buttons have been powered and pressed to display option results on a screen of TV. The remote controll buttons remaining perform complementary functionalities. For example, the arrow keys on remote control make movement of the options displayed on the screen, where a comfrimation button or identified as select allows to confirm remote functions displayed on the screen. A remote control could have several functionalities only accessible once made to display in screen. The three most common buttons on a remote control are First power button that powers on the TV, menu button that displays a list of functionalities on the powered on bl;ank blue screen, and using the arrow buttons on the remote would moves an indicator arround the screen area options. The selection button makes confrimation of the option.

just bought a Topfield trf-2460 PVR and I have got everything working except the remote control (that came with pvr) sound funtion. I can record and playback with the audio working fine but even after setting the TF remote control to work on the TV funtion, it just doesn't like it, except for the mute button, that and the off function. Any suggestions would be appreciated. Joe

Gather up all the remote controls that you think are not working and a digital camera.Turn the digital camera on, all you need to do is look at is the digital screen while performing the process.No need for turning off all the lights (but may be helpful in seeing the IR signal).
Point the remote towards the lens of the camera as you would when pointing the remote towards the TV.Press and hold any button on the remote while viewing the screen on the camera. Note: some buttons may not transmit signals via default. Best button to try first is the power button.While holding the button on the remote and viewing the digital camera screen if you see a blueish light, that means the infrared signal is working properly, there is a problem with the direct connection (if its a universal remote, try setting it up, if its not, you're probably not pointing it correctly).

It sounds like the key on the remote is stuck. In your case, if you see the flashing light on the camera screen without pushing any button, then for sure one of the button is stuck.
Testing remote control:
The remote control puts out IR (InfraRed) signal that human eyes cannot see, to find out if the remote is sending out the signal or not you just point the remote at the digital camera’s Lens (Digital Camera can detect IR), you should see flashing light on the camera’s screen when any one of the remote button is pushed. If you do see the flashing on the camera, then the problem is in the TV IR receiver or the main logic board; more troubleshooting with scope will be needed to look at the signals.

This may sound silly but does the remote have a funtion button or buttons at the top of the remote? It may be set to operate a DVD or VCR instead of the TV.

Failing that check the batteries, it is very rate that your TV will stop accepting IR signals.

Hope this helps,

Cheers

There is not a RF TV signal or the RF circuit is has a bad funtion, try to verify de antenna connection