Likely fix
Fix: Cable box says no signal on TV
A cable or satellite box no signal error usually means the TV is on the wrong input, the HDMI cable is loose, the box is off, or the box needs to restart.
Quick answer
Select the correct HDMI input, check the cable box power, reconnect HDMI, then restart the cable box.
Important warning
Cable boxes can take several minutes to restart. A blank or no signal screen during reboot can be normal.
Try this
- 1 Make sure the cable box or satellite box is powered on.
- 2 Press Input or Source on the TV remote.
- 3 Choose the HDMI input used by the cable box.
- 4 Unplug and reconnect the HDMI cable at both ends.
- 5 Restart the cable box by unplugging power for 30 seconds.
- 6 Wait several minutes for the box to fully boot.
- 7 Try another HDMI cable or port.
- 8 Contact your TV provider if the box stays on a boot or error screen.
Common causes
Wrong TV input.
Cable box is off.
Loose HDMI cable.
Cable box is frozen.
Bad HDMI cable or port.
Provider outage or box activation issue.
What to check next
- Check cable box power light.
- Check TV input.
- Check HDMI cable.
- Check whether the box shows a clock, logo, or boot screen.
- Check provider outage if the box boots but TV service fails.