Table of contents(15)+
- 01The 30-second test
- 02Fix 1: Switch to the correct input
- 03Fix 2: Reseat and swap the HDMI cable
- 04Fix 3: Power-cycle the TV and your device
- 05No Signal by source: quick reference
- 06Fix 4: Rescan channels for an antenna or aerial
- 07Fix 5: Update firmware, then factory reset
- 08Frequently Asked Questions
- 09Why does my Hisense TV say No Signal?
- 10Why does my Hisense TV say No Signal but everything is plugged in?
- 11Why does my Hisense TV say No Signal on HDMI?
- 12Does No Signal mean my Hisense TV is broken?
- 13How do I reset my Hisense TV to fix No Signal?
- 14Why does my antenna say No Signal on my Hisense TV?
- 15Related guides
A Hisense TV shows No Signal when it can't find a source on the selected input. Press the Input or Source button and switch to the port your device uses. Then check the cable, power-cycle the box, and reseat both ends. Loose HDMI cables cause most No Signal errors.
I've hit this on a Hisense U8K and an older H8G. Both times it was the input, not the TV. On the U8K, the soundbar's HDMI eARC port had drifted loose. On the H8G, my Fire TV Stick needed a reseat and a reboot. Same error, two quick fixes.
The 30-second test
Before you touch a cable, rule out the input. Grab the remote and press Input or Source. Cycle through each HDMI port and watch for your device to appear.
- Picture comes back on another port? You were on the wrong input. Done.
- Every port says No Signal? The cable or connected device is the problem. Keep reading.
- No response from the remote at all? A dead remote can look like a TV fault — see why a Hisense remote stops working first.
Fix 1: Switch to the correct input
This is the most common cause, so start here. Your TV is likely watching an HDMI port with nothing plugged in.
Press Input or Source on the remote. Select the port your device uses — HDMI 1, HDMI 2, or TV/Antenna. Give each input a few seconds to wake up.
When it won't help: if the right input still says No Signal, the port is fine but the source or cable isn't. Move to Fix 2.
Fix 2: Reseat and swap the HDMI cable
A half-seated HDMI plug is the number-one hardware cause. Cables creep loose when you move the TV or the box.
- Unplug the HDMI cable at both ends. Push each end back in until it seats firmly.
- Try a different HDMI port on the TV. Note the new port number.
- Swap in a spare HDMI cable if you have one. Cheap cables fail more than people expect.
When it won't help: a 4K box on an old cable can drop out at high bandwidth. If the picture flickers then dies, the cable can't carry the signal.
Fix 3: Power-cycle the TV and your device
A soft reset clears a stuck handshake between the TV and the source. It fixes more No Signal errors than any menu setting.
- Turn off the TV and the connected device (cable box, console, streaming stick).
- Unplug both from the wall for 60 seconds. This drains leftover power.
- Plug the TV in first, then the device. Turn them on and select the input again.
For a deeper reset that keeps your settings, see how to reset a Hisense TV.
When it won't help: if No Signal returns within minutes, a failing device or a firmware bug is likely. Keep going.
Changing inputs and rebooting is a pain when the remote is missing or dead. The HiRemote app turns your phone into a full Hisense remote, so you can switch sources and open Settings without hunting for buttons. On a Hisense Roku TV, the browser remote works from any phone with no app install.
No Signal by source: quick reference
| Source | Most likely cause | Fastest fix |
|---|---|---|
| Streaming stick | Stick asleep or port loose | Reboot stick, reseat HDMI |
| Cable / satellite box | Box off or wrong input | Power-cycle box, reselect input |
| Game console | 4K signal on old cable | Swap HDMI cable |
| Antenna / aerial | Empty channel list | Run a channel scan |
| Wall-mounted TV | Cable pulled tight, half-seated | Reseat both HDMI ends |
Fix 4: Rescan channels for an antenna or aerial
If No Signal shows on the TV or Antenna input, your channel list is empty or stale. A rescan rebuilds it. Menu paths differ by OS:
- VIDAA: Settings > Channel > Auto Scan (or Auto Tuning).
- Google / Android TV: Settings > Channels & Inputs > Channels > Channel Scan.
- Roku TV: Settings > TV inputs > Antenna TV > Set up input > Scan.
- Fire TV: Settings > Live TV > Channel Scan.
Set the source to Air or Antenna, not Cable, unless you use a coax cable service.
When it won't help: weak reception still reads as No Signal after a scan. Check the aerial cable and try a signal amplifier.
Fix 5: Update firmware, then factory reset
A software glitch can break input detection. A firmware update often restores it.
- Connect the TV to Wi-Fi if it isn't already.
- Open Settings and find System or Support, then Software or System Update.
- Install any update and let the TV restart.
Our Hisense update guide lists the exact path per OS.
Still stuck? A factory reset is the last software step before you call support. It wipes your apps and settings, so treat it as a reset, not a first move.
When it won't help: if every input, cable, and reset fails, the HDMI board or panel may be faulty. Contact Hisense support (or Hisense UK) for warranty service.
Frequently Asked Questions
Why does my Hisense TV say No Signal?
Your Hisense TV says No Signal because the selected input has no active source. The common reasons are the wrong input, a loose HDMI cable, or a device that is off or asleep. Switch to the correct port, reseat the cable, and power-cycle the connected box. That clears most cases in a minute or two.
Why does my Hisense TV say No Signal but everything is plugged in?
Being plugged in isn't enough — the TV must be set to that exact port. Press Input and select the HDMI number your device uses. If it's correct, the cable may be loose or the device asleep. Reseat both ends and reboot the device to force a fresh handshake.
Why does my Hisense TV say No Signal on HDMI?
A No Signal on HDMI usually means a handshake failure between the TV and your device. Unplug the HDMI cable at both ends and push it back in firmly, then power-cycle the device. If it continues, swap the cable or try another HDMI port, since 4K sources strain older cables.
Does No Signal mean my Hisense TV is broken?
No, No Signal rarely means the TV is broken. It points to the source or connection, not the panel. The screen clearly lights up to show the message, which proves the display works. Focus on inputs, cables, and the connected device first. A hardware fault is the last thing to suspect.
How do I reset my Hisense TV to fix No Signal?
Start with a soft reset: unplug the TV for 60 seconds, then power it back on. This clears most temporary glitches. If No Signal stays, a factory reset in Settings under System or Support restores defaults. You will need to re-add your apps and Wi-Fi afterward, so try the soft reset first.
Why does my antenna say No Signal on my Hisense TV?
An antenna shows No Signal when the channel list is empty or reception is weak. Run a channel scan in Settings, and set the source to Air or Antenna, not Cable. Check that the aerial cable is tight at both ends. If channels still won't load, reposition the aerial or add a signal amplifier.
