TV Input Source Menu Not Working? 3 Proven Fixes (All Brands)

>Pressing INPUT or SOURCE on your remote and getting nothing back is a frustrating TV problem. That menu is how you switch between your cable box, streaming stick, game console, and laptop — without it, your TV is stuck on a single source.

Table of Contents

• What Is the Input Source Menu?
• Why Does the Input Source Menu Disappear?
• Quick Checks Before You Start
• Method 1: Re-Enable Sources in the Service Menu
• Method 2: Update the TV Software
• Method 3: Factory Reset the TV
• Frequently Asked Questions

Three fixes for a missing input source menu — for Sony, Samsung, LG, TCL, Toshiba, and all China/universal-board TVs.

What Is the Input Source Menu?

It's the on-screen list of every signal source your TV can display — typically ATV (tuner), AV (composite), HDMI1/HDMI2, PC/VGA, and Media/USB. Open it with the INPUT or SOURCE button on the remote or the TV's own key panel. When it breaks, you see one of these:

• Menu doesn't show: Pressing INPUT does nothing at all.
• Blank menu: The menu opens but lists no options.
• Missing options: The menu opens but some inputs (like HDMI or AV) are gone.

Why Does the Input Source Menu Disappear?

Common causes:

• Hidden inputs: The factory Source Settings list can have individual inputs switched off — sometimes by an accidental button combination.
• Firmware glitch: Corrupted settings or a software bug can blank out the input list.
• After an update: Some updates reset source preferences and hide previously visible inputs.
• Remote problem: Dead batteries, a blocked IR sensor, or a worn INPUT key can look like a broken menu when the TV is fine. Our TV remote not working fixes cover the remote side in full.

Quick Checks Before You Start

Rule out the easy causes first — these fix the problem more often than you'd think:

• Press INPUT on the TV panel. If the menu works there, the TV is fine — the remote is the problem.
• Fit fresh batteries and clear anything blocking the TV's infrared sensor.
• Power-cycle: Unplug the TV for 5 minutes, plug it back in, and try again.
• Universal remote? Test with the original if possible — replacements sometimes don't map INPUT correctly.
• Power on your HDMI device — many TVs only list ports with an active signal.

Method 1: Re-Enable Sources in the Service Menu

A targeted fix — it turns hidden inputs back on directly, on all brands including China/universal-board models:

1. Press MENU on the remote, then enter your TV's service menu code (1147 is common on China/universal boards; see our service menu guide for others).
2. Find Source Settings near the bottom and enable every source — ATV, AV, HDMI1, HDMI2, PC, Media.
3. Press EXIT, then INPUT — the menu should now show every option.

Service Menu Safety Warning

The service menu holds factory-level settings — change only Source Settings. Don't touch panel types, mirror, or voltage values: wrong changes can damage the picture permanently.

Method 2: Update the TV Software

If the service menu doesn't help, the cause is probably software. Suspect corrupted firmware if the trouble started after an interrupted update, if other menus also misbehave, or if Source Settings already shows everything enabled. Smart TVs can update online (Settings > Support > Software Update); older sets need the USB method below.

How to Update via USB

1. Download the firmware for your exact model from the manufacturer's official website onto a FAT32 USB drive (file in the root, not in a folder).
2. Insert the drive into the TV, open Settings > Update (or Service), and choose the USB update option.
3. Start the update and wait — never turn off the power mid-process. When the TV restarts, press INPUT.

Method 3: Factory Reset the TV

A simple method — a reset restores the input menu along with everything else. Photograph your settings first (picture values, channel list): a reset erases them all.

With the Remote Control

1. Open the service menu with your TV's code (1147 on many China boards).
2. Find Shipping Mode, Factory Reset, or Restore, press right arrow then Enter/OK, and wait.
3. The TV restarts with factory settings — and the input source menu works again.

Without the Remote Control

No remote? Use the panel buttons: hold Volume Up + Channel Up + MENU together for 30 to 40 seconds — the TV resets to factory settings.

For more no-remote methods, see our complete factory reset guide.

Frequently Asked Questions

Why is my input source menu completely blank?

See Method 1 first, then Method 2 — the blank-menu causes and fixes are covered there in full.

The menu opens but some inputs (HDMI/AV) are missing. Why?

See Method 1 for the Source Settings fix and Quick Checks Before You Start for the power-on-device check.

Which service menu code should I use for my TV?

It depends on the brand and main board. 1147 works on many China/universal-board TVs; our service menu guide lists more.

Will a factory reset delete my channels and apps?

Yes — everything returns to out-of-the-box state. Photograph your settings first.

My HDMI device shows "no signal." Is that the same problem?

No — this guide fixes a broken input menu. For a dead HDMI port, see our HDMI No Signal fixes.

Work the quick checks first, then the service-menu fix, and only reset when the first two have failed. Photograph your settings before any reset, and the input menu should be back with every source listed — without losing anything you did not mean to erase.

About the Author — IW Official

IW Official is a TV repair help desk publishing practical, tested do-it-yourself television repair guides. Our guides cover LED and LCD TVs of all major brands, written in plain language so anyone can follow them safely.