HDMI Not Working / No Signal / No Input Detected

How to Fix It

1. Select the correct input.

   Press the Input or Source button on the Panasonic remote. A list of input options appears — select the numbered HDMI port where the cable is physically connected on the back of the TV. Panasonic TVs label inputs as HDMI 1, HDMI 2, etc. — check the back panel label next to the port.

2. Reseat the HDMI cable at both ends.

   Unplug the HDMI cable at both the Panasonic TV and the source device (Blu-ray player, games console, streaming stick) and firmly push it back in at both ends. A slightly loose HDMI connection causes intermittent no-signal errors. If available, try a different high-speed HDMI cable.

3. Power cycle the source device.

   Turn off the connected device completely — not sleep mode — unplug it for 30 seconds, then power it back on. Also unplug the Panasonic TV for 60 seconds. HDMI handshake failures are common after firmware updates or power outages — a full power cycle of both devices forces a fresh handshake.

4. Enable HDMI in the Panasonic settings.

   Some Panasonic TV models allow individual HDMI ports to be renamed or hidden in the input list. Go to Settings → Inputs → HDMI and confirm the relevant HDMI port is enabled and not hidden. If the input does not appear in the source list, check the HDMI port settings to make it visible.

5. Try the device on a different HDMI port.

   Move the HDMI cable to a different port on the Panasonic TV and select that input. If the device now works, the original HDMI port has developed a fault. Note that one of the Panasonic HDMI ports is typically designated as the ARC port for soundbar connection — the ARC port can also be used for regular devices.