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No Signal Message - HDTV / webOS / Netcast

Troubleshooting Commercial TVs, Healthcare TVs, Hospitality TVs, TVs Last Updated 07/15/2016
No Signal Message - HDTV / webOS / Netcast
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Do you see a No Signal message on your TV? The No Signal message means that the TV isn't getting any input, from the currently selected source!

This could happen for so many reasons! But let's focus on the more common ones.

1. An external device (Set-Top Box, Blu-ray Player, Game Console, etc.) is attached to your TV.
2. These devices connect using various cables, but mainly HDMI, Coaxial, or in some cases Component Video.
3. The cable needs to come OUT of the other device, and IN to the TV. The Input port of the TV will be labelled (HDMI 1, Cable/Antenna, etc.).

  • 1. Check the label of the Input port (if you have many connected, make sure you follow the wires from the device to the TV to make sure you're looking for the right one).
    2. If your Remote has an Input/Source button , press it and choose the input from the list that matches where your device is connected.
    (If your Inputs have labels, as shown below, click All Inputs to see the Port numbers)

    2a. If your remote Does Not have an input/source button, press the Home button , then look in the Upper-Right corner of the TV for the Input icon , and click it.

    Still get a No Signal message?

    • Try switching to each other input, maybe the ports aren't labelled correctly.
    • Try connecting the HDMI cable into a different Input port, maybe the port is malfunctioning.
    • Try connecting a different device to the TV (or the same device to a different TV), maybe the other device is causing the issue.
    • Try using a different HDMI cable, sometimes cables can short-out, or degrade over time.
    • Some devices may have compatibility issues, such as some of the new 4K Blu-ray Players connected to our 4K TVs. It's possible the HDMI HDCP Handshake may be timing out (rare, but it could happen).

    Still unresolved? Make sure to check the items above closely, as it is extremely rare to require repair service for a No Signal issue.
  • A common issue with using an antenna is that they are so easily moved, and may not find the same channels (even in a slightly different position).

    1. Run Auto-Tune. If the channel you want to watch isn't found by auto-tune, add the channel manually.
    1a. Channel Tuning can differ by TV model, but in general:

    Go to Settings


    Channel Tuning

    2. After adding the channel manually, adjust your antenna until the channel comes in.
    2a. On some models, you can see the Signal Strength/Quality during Manual Tuning.

    Still get a No Signal message?
    Make sure to check the items above closely, as it is extremely rare to require repair service for a No Signal issue.

If everything above seems obvious, and you've checked all of it

Your issue may be related to solder. Due to expanding and contracting (slightly), as the internal boards heat and cool, cracks can form in solder. This is common across all electronic devices.

For your own safety, and to guarantee a working unit in the end, we strongly recommend that you Request a Repair by an Authorized Repair Technician.

Request a Repair

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