The NO error on your Panasonic Tv means the television is not receiving a video signal from the connected source. Check your cable connections and input selection to get your picture back.

Error code NO
Meaning No signal is detected on the currently selected input
Severity Low — usually a quick connection or settings fix
Time to fix 5–15 minutes
Tools needed None, or a spare HDMI cable

What the NO error means

The “No Signal” message appears when your Panasonic TV is switched to an input (HDMI, AV, or antenna) but isn’t receiving any data from that source. This is not a fault with the TV panel itself but a communication issue between the TV and the connected device, cable, or broadcast signal.

It’s one of the most common messages TV owners see, and in most cases it points to something simple like a loose cable, a powered-off device, or the wrong input being selected on the remote.

Common causes

  • The source device (Sky box, games console, Blu-ray player, laptop) is turned off or in standby
  • A loose, damaged, or disconnected HDMI or AV cable
  • The TV is set to the wrong input channel
  • A weak or disconnected aerial or satellite cable for broadcast TV
  • Faulty HDMI port on the TV or the source device
  • Outdated TV firmware causing handshake issues with newer devices

How to fix the NO error

  1. Check the source device is on: Make sure your set-top box, console, or player is powered on and not in sleep mode.
  2. Confirm the correct input is selected: Press the Input or Source button on your remote and cycle through until you find the correct HDMI or AV channel.
  3. Inspect and reseat all cables: Unplug the HDMI or aerial cable from both ends, check for damage, and plug it back in firmly.
  4. Try a different cable or port: Swap in a spare HDMI cable or move the connection to a different HDMI port on the TV to rule out a faulty port.
  5. Restart both devices: Turn off the TV and the source device, unplug them from the mains for 30 seconds, then power both back on.
  6. Update TV firmware: Go into the TV’s settings menu and check for software updates, as outdated firmware can cause signal handshake problems.

If you regularly deal with network or streaming related errors on Panasonic sets, it’s worth reviewing guides like Panasonic Tv NW-2-5 Error Code: Causes and Fixes and Panasonic Tv NW-2-4 Error Code: Causes and Fixes, since connection issues often overlap with input problems.

FAQ

Why does my Panasonic TV say “No Signal” even though everything is plugged in?
A. The cable may be loose at one end, the source device could be off, or the TV might be set to the wrong input. Reseat the cable and check the correct input is selected.

Could a faulty HDMI cable cause this error?
A. Yes, a damaged or worn HDMI cable is a common cause. Try a different cable to see if the signal returns.

Do I need to worry about a hardware fault if I keep seeing NO?
A. Not usually. Most cases are resolved by checking cables, inputs, and device power. If the issue persists across all inputs and devices, it’s worth checking related error codes such as Panasonic Tv NW-3-6 Error Code: Causes and Fixes or contacting Panasonic support.