The NO error on your Hisense Smart means the TV is not detecting an active video signal from the currently selected input. Fixing it usually just means checking your cables and making sure the right input source and connected device are switched on.

Error code NO
Meaning No signal detected on the selected HDMI or AV input
Severity Low — almost always a cable, input, or source device issue rather than a hardware fault
Time to fix 5–15 minutes
Tools needed None, or a spare HDMI cable

What the NO error means

“No Signal” is not a fault code stored in the TV’s memory — it’s a status message the TV displays whenever it’s set to an input (like HDMI 1, HDMI 2, or AV) but isn’t receiving any picture data from a connected device. It appears whether the source device is a games console, streaming box, cable box, laptop, or DVD player.

In most cases the TV itself is working perfectly fine; it’s simply waiting for a device to “wake up” and start sending video. This is similar to issues covered in other Hisense Tv ERROR Error Code: Causes and Fixes guides, where the display is reporting a connection state rather than an internal malfunction.

Common causes

  • The connected device (console, box, laptop) is turned off or in standby
  • The TV is set to the wrong input source
  • A loose, damaged, or poor-quality HDMI/AV cable
  • The source device’s output resolution isn’t supported by the TV
  • A faulty or dirty HDMI port on the TV or source device
  • The connected device needs a firmware update or reset

How to fix the NO error

  1. Check the source device is powered on: Make sure your console, streaming stick, or box is switched on and out of standby mode, with its own indicator light active.
  2. Confirm the correct input is selected: Use your remote’s Source or Input button to cycle through HDMI 1, HDMI 2, AV, etc., and match it to the port your device is plugged into.
  3. Reseat or swap the cable: Unplug the HDMI or AV cable from both ends, check for bent pins or damage, plug it back in firmly, or try a different cable if you have one.
  4. Try a different HDMI port: Move the cable to another HDMI input on the TV to rule out a faulty port, then select that new input on the remote.
  5. Power cycle both devices: Turn off the TV and the source device, unplug both from the mains for 30 seconds, then plug back in and turn on the TV first, followed by the source.
  6. Adjust the source device’s output settings: If you can access the source device’s display settings, lower the resolution or refresh rate to a standard setting like 1080p 60Hz and see if the signal appears.

FAQ

Why does my Hisense TV say “No Signal” even though everything is plugged in?
This usually happens because the source device is asleep, the wrong input is selected, or the cable connection has come loose. Checking these three things resolves most cases.

Could the “No Signal” message mean my HDMI port is broken?
It’s possible but not common. Try the same cable and device on a different HDMI port; if the picture appears there, the original port may be faulty and worth checking further.

Does the No Signal error mean my TV needs repairing?
Rarely. It’s almost always caused by an external connection or source device issue rather than an internal TV fault, similar to what’s described in the Panasonic Tv NO Error Code: Causes and Fixes guide for the same message on other brands.