Quick answer
Start with the least destructive check, confirm the device state, and only then change settings. For this problem, the fastest route is usually: Confirm the antenna cable is in the RF input, not a satellite input. Choose digital terrestrial or cable mode before scanning. Check signal level before moving the antenna.
Before you start
- Confirm the antenna cable is in the RF input, not a satellite input.
- Choose digital terrestrial or cable mode before scanning.
- Check signal level before moving the antenna.
- Repeat the scan after selecting the correct country or region.
Confirm the signal source
A scan only works when the TV is searching the same source you actually use. Terrestrial antennas, cable TV, and satellite feeds use different tuners and different menus.
If your TV asks for antenna, cable, or satellite, pick the one printed near the port where the cable is connected.
Check the cable and adapter path
Loose adapters and bent coaxial tips are common reasons for a zero-channel scan. Remove the cable, inspect the center pin, then reconnect it firmly.
If you use a splitter, test the TV directly from the wall or antenna before blaming the television.
Scan with the correct mode
Select digital channels first. If the scan still finds nothing, run a full scan rather than a quick scan because some older firmware skips weak multiplexes.
After the scan, save the list before exiting. A surprising number of older menus discard found channels when Back is pressed too early.
Symptom checklist
| What you see | Most likely cause | First safe action |
|---|---|---|
| The device reacts, but the result is wrong | Wrong input, profile, mode, or account state | Confirm the visible setting before resetting anything |
| Nothing reacts at all | Power, cable, port, battery, or button issue | Test with a known good power source or cable |
| The problem comes back after reboot | Saved setting, weak signal, low storage, or failing accessory | Change one variable and write down what changed |
FAQ
- Should I scan analog channels too?
- Only if your local provider still carries analog channels. For most modern terrestrial setups, digital scan is the important one.
- Can a bad HDMI cable cause missing TV channels?
- No. Broadcast channels use the antenna or cable input. HDMI matters only for external boxes and players.