Resetting Sharp LC-50M Remote Code After Firmware Update

When a firmware update rolls out for the Sharp LC‑50M, many owners find their remote no longer works with the television, and the TV may even display an error code such as 404 after the update.
Clearing Sharp LC‑50M Error Code 404 After Software Update explains how to resolve this.
Some firmware updates can cause the TV to power off unexpectedly; this is similar to the issue faced by users of the Philips 65OLED705, which is detailed in
Preventing Philips 65OLED705 from Powering Off After Firmware Update.

The culprit is usually a reset of the remote’s internal code—a safety measure that the TV enforces to maintain compatibility with the new software.
Resetting the remote code is a straightforward process, but it requires a clear understanding of why the reset occurs, the steps to re‑pair the remote, and the precautions you should take along the way. This guide walks you through the entire procedure, from preparation to verification, ensuring your Sharp LC‑50M and its remote will operate together flawlessly after every update.

Why Firmware Updates Affect Remote Codes

When Sharp releases a firmware update, it often includes changes to the communication protocol, power‑saving modes, or the way the TV interprets infrared (IR) signals. If the remote’s stored code no longer matches the TV’s expected pattern, the TV can refuse to respond. Resetting the code forces the remote to re‑discover the correct pattern, synchronizing the two devices again.

The reset is a protective feature that:

• Prevents unauthorized or non‑official remotes from controlling the TV.
• Avoids conflict between multiple remotes that may have been paired previously.
• Keeps the TV secure by ensuring only verified devices can command it.

What You’ll Need

Step 1 – Verify the Firmware Version

Before resetting anything, confirm that the TV indeed ran a firmware update that affected the remote.

1. Turn on the TV and navigate to the Menu.
2. Find the System Settings or About section.
3. Note the Firmware Version displayed.
4. If you see a number higher than what you remember before the update, proceed to the reset steps.

If you are unsure whether a firmware update occurred, you can look for release notes on Sharp’s support website or check the TV’s notification panel for an update message.

Step 2 – Power‑Cycle the Television

A simple power cycle can sometimes re‑establish communication without a full code reset. This is a good first attempt and also works for models like the Panasonic GX1, which may lose Wi‑Fi connectivity after a power cycle.
Preventing Panasonic GX1 from Losing Wi‑Fi Connectivity After Power Cycle provides guidance for that scenario.

1. Press the power button on the TV to turn it off.
2. Unplug the TV from the wall outlet and wait 30 seconds.
3. Plug the TV back in and press the power button to turn it on.
4. Try the remote. If the remote still fails, move to a full reset.

Step 3 – Reset the Remote’s Internal Code (Standard Method)

Most Sharp LC‑50M remotes do not have a dedicated reset button. Instead, you will use the TV’s menu to clear the remote database, forcing a new code pairing.

3.1 Access the Remote Code Management

1. With the TV turned on, press the Menu button on your existing remote (if you still have it) or a handheld TV remote that works.
2. Navigate to System Settings > Remote Control.
3. Select Remote Code Reset or Erase Remote Codes.
4. Confirm the action. The TV will clear its stored remote codes.

3.2 Put the TV in “Pairing Mode”

Once the codes are erased:

1. From the Remote Control menu, choose Pair New Remote or Add Remote.
2. The TV will display a code on the screen (e.g., “Enter code 423”).
3. Hold the Sharp LC‑50M remote close to the TV.
4. Press the power button or the code button (the button that displays the same code number on the remote).
5. The TV should confirm that the remote is paired successfully.

If the TV does not prompt for a code, you may need to consult the user manual for the exact pairing procedure. Some Sharp models require pressing a specific button for several seconds after selecting Pair New Remote.

Step 4 – Reset the Remote’s Internal Code (Advanced Method)

If the standard method does not work, some users discover that the remote itself has a hidden reset sequence. This involves a combination of button presses that trigger the remote to clear its stored code.

1. Turn the TV off and unplug it from the wall.
2. Hold the Power button on the remote for 10–15 seconds until the LED (if present) blinks once.
3. Reconnect the TV, turn it on, and immediately press the Power button on the remote again.
4. The TV should accept the remote automatically, as it will treat the remote as new.

This method works best if the remote has a tiny LED indicator that flashes when a reset occurs. If your remote lacks an LED, skip this step and rely on the TV‑initiated pairing.

Step 5 – Verify Remote Functionality

After pairing, test all primary functions to ensure full compatibility.

If any function fails, double‑check that the remote is the original Sharp LC‑50M model. Third‑party remotes may need additional configuration.

Step 6 – Troubleshooting Common Issues

Even after a reset, some problems may persist. Below are common scenarios and how to address them.

Remote Does Not Respond at All

• Check the batteries: Replace them with fresh ones.
• Ensure line of sight: IR remotes require a clear path; remove obstacles.
• Try another remote: Confirm the TV itself is receiving IR signals.

Remote Powers TV but Other Functions Fail

• Confirm the remote is paired: Use the TV’s menu to re‑enter pairing mode.
• Reset the TV’s firmware: Sometimes the update was incomplete; repeat the firmware download and install.
• Check for interference: Nearby devices (e.g., smartphones) can emit IR; move them away.

Remote Works in Some Modes but Not Others

• Update the remote’s firmware: Some remotes receive updates via the TV.
• Check for region codes: If you moved the TV to a new region, ensure the remote’s region setting matches.

Step 7 – Advanced Tips for Users Who Want Extra Control

If you frequently use the Sharp LC‑50M in a multi‑remote environment (e.g., with a universal remote or a smart home hub), consider the following:

• Use a Universal Remote with Sharp Code: Program the universal remote with the Sharp LC‑50M code (often listed in Sharp’s database).
• Create a Backup of the Remote Code: Some Sharp TVs allow exporting remote codes to a USB drive; refer to the user manual.
• Enable HDMI‑CEC: Ensure the TV’s HDMI‑CEC (Consumer Electronics Control) is enabled so other HDMI devices can control power and volume.
• Set a Static Remote Code: Some remotes allow you to set a fixed code rather than auto‑detecting. This can reduce pairing issues after future updates.

Step 8 – Keeping the Remote and TV Updated

To minimize future remote reset issues:

1. Schedule firmware checks: Every month, check the TV’s settings for updates.
2. Install updates during low‑usage periods: The TV will reboot during an update; avoid important viewing sessions.
3. Maintain a spare remote: Keep an extra Sharp LC‑50M or compatible universal remote on hand.
4. Use a power protector: Protect the TV from power surges that can interrupt firmware updates.

Summary

Resetting the Sharp LC‑50M remote code after a firmware update is a manageable task that involves a few steps:

• Verify that an update occurred.
• Power‑cycle the TV.
• Use the TV’s remote code reset menu to clear stored codes.
• Pair the remote again.
• Verify all functions work.

By following the detailed steps above, you can restore full functionality to your Sharp LC‑50M and its remote, ensuring a seamless entertainment experience. Keep your TV and remote both up‑to‑date, and always have a backup remote ready. Happy viewing!