In all other cases, if you’re convinced there is absolutely nothing wrong with the TV hardware, the problem may live with one of its many connections. Follow the simple troubleshooting steps in this guide to deal with the no signal issue without incurring too much cost.
What Exactly Is a “No Signal” Problem
Most TV manufacturers include an auto-connection mechanism that allows the device to be detected and displayed on the screen as soon as you turn on the remote. If your TV says no signal even though it’s set to the correct source or input as the cable box, what you’re facing is a network reception issue. You can first try to power off the TV, wait for a few minutes and restart. If the problem continues, you’ll need to examine the individual connections one by one for troubleshooting. It’s a simple process of elimination. When a TV displays a no signal message, it can be frustrating. But, in most cases, you don’t have to call for external assistance. By following one of the solutions below, you can fix the issue on your own. If you’re using one of the HDMI ports of the TV to connect to a laptop/computer or any other screen-sharing device, you must disengage them before proceeding.
1. No Signal When Connected to Windows
There can be numerous reasons why you’d get the no signal message when trying to connect your TV to Windows 10 or Windows 11. While the TV hardware-related problems are covered elsewhere in this guide, there are a few things you can try on the Windows software side. Normally, if you have a connected GPU, then the HDMI port on the motherboard will be disabled automatically. Should you want to re-enable the motherboard HDMI port, you can sometimes do so by right-clicking the desktop and switching there, but you may need to do that through the BIOS (though generally, it’s better to use the port on the GPU, as you’ll be taking advantage of your GPU’s power that way).
2. Check the Cable Box/Set-Top Box
Your set-top box might be the reason for a no-signal issue in some cases. Whether you have an SD or HD box, the provider might have released new firmware and proceeded to update it in the background. This means new satellite settings may have been uploaded, but the device has not fully integrated with the adjustments. Unplug the power cable and insert it once again to solve the problem. Make sure the TV is switched off. You may also want to pull out the smart card/viewing card and let the cable box cool for a while. Do it firmly without much pressure. Later, reinsert the card with the chip facing downward, following any visible arrows.
3. HDMI Cable/Port Issues
In most cases, the reason behind a no signal problem can be traced to either the High-Definition Multimedia Interface (HDMI) cables or the ports. If the connections are not fitting tightly or slipping out, there might be slight damage to the ports. It’s nothing serious that a TV mechanic can’t fix, and you can simply migrate to an alternative HDMI port. (Most TV manufacturers include at least two HDMI ports.) Disengage the HDMI cable and re-insert it into the old or new HDMI port. You may want to upgrade your HDMI connector cable to a self-locking one which will help it stay in the port position. Once you sort out these HDMI issues, your TV signal should start working again in a jiffy.
4. HDCP Errors
In some cases, your TV may run into what is known as a High-Bandwidth Digital Content Protection (HDCP) error. This anti-piracy measure suggests that non-licensed devices should not be receiving any cable TV content. Almost all modern TV sets have to be HDCP-compliant. If you’re trying to connect a Kodi box, for example, to your cable TV using HDMI, especially with higher definition displays, the no signal message will show up due to HDCP errors. You will have to remove the offending device and that should restore the connection.
5. Change the Input Source of the TV
Switching to the correct input source screen helps resolve sudden display issues. Depending on your television model, you may find additional input modes for TV, AV, video, and HDMI. These displays are shown as “TV 1/TV 2” or “Video 1/Video 2.” You only need to use your remote control to change the input source for your television device.
6. Other Tips
Sometimes your TV needs to be on a different base channel. While being on 1 or 2 is the default setting on the TV remote, you sometimes need to move it to 3 or 4. Again this change is for the TV remote only and has nothing to do with your cable or streaming service provider. You can also reverse the order of starting the cable box and TV compared to an older sequence. This allows both devices to connect again and receive the signals. Image credit: diy13 via Adobe Stock All screenshots are by Sayak Boral If you’re connecting via PlayStation or Xbox, do the same, check on those devices. Finally, ensure that your HDMI cable has been inserted properly in the right television HDMI port. If your router or Internet source is working just fine, then TV software issues are the main cause of 404 and other Wi-Fi unavailability errors. Follow our detailed guide to rectify all possible TV not connecting to internet issues.
