The NO error on your Hisense Tv means the television is not receiving a video signal from the connected source device. Fix hint: this is almost always a cable, input selection, or source device power issue rather than a fault with the TV itself.

Error code NO
Meaning No Signal Detected — the TV cannot find an active video feed on the selected input
Severity Low — usually fixed without a technician
Time to fix 5–15 minutes
Tools needed None (occasionally a replacement HDMI cable)

What the NO error means

When your Hisense TV shows “No Signal Detected,” it simply means the screen is on and working, but it isn’t receiving any picture data from the device plugged into the selected input. This could be a cable box, games console, streaming stick, or laptop. The TV itself is rarely the cause — the problem usually sits between the input selection, the cable, and the source device.

Common causes

  • The TV is set to the wrong input/source (e.g. HDMI 2 instead of HDMI 1)
  • A loose, damaged, or poor-quality HDMI or AV cable
  • The connected device (cable box, console, streaming stick) is powered off or in standby
  • The source device has crashed or frozen and isn’t outputting a signal
  • A faulty HDMI port on either the TV or the source device
  • Outdated TV firmware causing input detection issues

How to fix the NO error

  1. Check the correct input is selected: Press the Source or Input button on your remote and cycle through until you find the correct HDMI or AV port matching your device.
  2. Power cycle the source device: Turn off the connected device (console, box, or stick), unplug it for 30 seconds, then plug it back in and power on.
  3. Inspect and reseat the cable: Unplug the HDMI/AV cable from both ends, check for bent pins or damage, and firmly reconnect it. Try a different cable if one is available.
  4. Test a different HDMI port: Move the cable to another HDMI input on the TV to rule out a faulty port.
  5. Restart the TV: Unplug the TV from the mains for 60 seconds, then plug it back in and turn it on to refresh the signal detection.
  6. Update TV firmware: Go to Settings > Support/About > Software Update and install any available updates, as this can resolve input recognition bugs.

If you’re troubleshooting other display issues, it helps to understand related codes like Hisense Tv ERROR Error Code: Causes and Fixes or Hisense Tv ERROR Error Code: Causes and Fixes, which cover different connection faults. For persistent input problems, see Hisense Tv ERROR Error Code: Causes and Fixes and Hisense Tv ERROR Error Code: Causes and Fixes. If you own multiple TV brands, the Panasonic Tv NO Error Code: Causes and Fixes guide covers a similar issue on Panasonic sets.

FAQ

Why does my Hisense TV say “No Signal” even though everything is plugged in?
A. This usually happens because the TV is on the wrong input or the source device isn’t actually powered on. Check the input selection first, then confirm the connected device is switched on.

Can a faulty HDMI cable cause the No Signal error?
A. Yes. Damaged, loose, or low-quality cables are one of the most common causes. Try reseating the cable or swapping it for a known-working one.

Do I need to update my TV’s firmware to fix this?
A. Not always, but outdated software can cause input detection glitches. If basic cable and input checks don’t work, a firmware update is a good next step.