Modern technology allows you to eliminate unnecessary cables and enjoy content on a large screen without complicated wiring. If you're looking for a way to connect your iMac to your TV via Wi-Fi, in most cases you won't need any additional adapters or cables. The Apple ecosystem offers a native protocol. AirPlay 2, which is built into many modern Smart TVs, providing high-definition image transmission.
The basic operating principle is that both devices—the computer and the TV—must be on the same local network. This ensures stable data exchange between them. Mac and a signal receiver. Depending on the year of your TV, the process may be fully automatic or require minimal manual configuration through the smart features menu.
In this article, we will take a detailed look at all available wireless connection methods, paying attention to the features of different operating system versions. macOS We'll also explore alternative options for models without built-in AirPlay support. You'll learn how to avoid lag and achieve maximum picture clarity.
Checking compatibility and network requirements
Before you begin setup, it's critical to ensure your hardware supports the required technologies. AirPlay 2 Not all TV models are available, even if they have Smart features. Typically, this technology is found on Samsung, LG, Sony, and Vizio models released after 2018, as well as devices based on Android TV with the appropriate certification.
⚠️ Attention: Make sure your iMac and TV are connected to the same Wi-Fi network. If you have a dual-band router, both devices must be on the same frequency (e.g., 5 GHz), otherwise your computer may not see the TV in the list of available devices.
It's also worth checking the operating system version on your Mac. For stable operation, it's recommended to use the latest versions. macOS, as Apple regularly releases updates that improve compatibility with external displays. On the TV side, a firmware update may also be required via the settings menu.
If your TV doesn't natively support AirPlay, that doesn't mean wireless connection is impossible. There are third-party receiver apps that can be installed on your Smart TV, turning it into a compatible signal receiver. However, for the best quality and minimal latency, it's best to use the built-in features.
Using built-in AirPlay on Mac
The easiest and most effective way to display an image is to use the system's "Screen Mirroring" feature. In modern versions macOS (Starting with Catalina and later), this process is managed in the control center or monitor menu. You don't need to install any additional software if your TV supports the standard.
To start broadcasting, find the "Screen Mirroring" icon (two rectangles) in the menu bar (in the upper right corner of the screen). If you don't see the icon, you can add it via System Preferences → MonitorsWhen you click the icon, the system will scan the network and offer a list of available devices. Select your TV from the list.
☑️ Check before connection
When connecting for the first time, a verification code may appear on the TV screen. Enter it on the iMac keyboard to authorize the connection. After this, your Mac desktop image will appear on the big screen. You can choose to mirror the TV or use it as a separate monitor.
It is important to note that when using AirPlay The load on the processor and wireless module increases. If you notice lag in the interface, try lowering the display resolution in your monitor settings or moving your computer closer to the router to improve the signal.
Setting up TVs of different brands
The process of activating signal reception may vary depending on the TV manufacturer and operating system installed. Owners of Samsung, LG, or Sony devices must first ensure that the corresponding service is activated in the TV menu.
On TVs Samsung The feature is often called "Apple AirPlay Settings" and is located in the "General" section. On models LG With webOS, you need to go to the "Home Menu" and find the "AirPlay 2 and HomeKit" app. On devices Android TV (Sony, Philips) You may need to install the AirPlay Receiver application or activate the built-in service in the settings.
| Brand TV | Setting location | Necessary action |
|---|---|---|
| Samsung | Settings → General → Apple AirPlay | Switch to the "On" position |
| LG (WebOS) | Home Menu → AirPlay 2 | Launch the application |
| Sony (Android) | Settings → Applications → AirPlay | Turn on and check the network |
| Vizio | Settings → Smart View / AirPlay | Activate the function |
In some cases, the TV may ask for permission to connect each time you try to pair. To avoid this, in the AirPlay settings on your TV, you can select "Require code: Only on first connection" or "Never" if you're confident in the security of your home network.
What should I do if my TV is not visible in the list?
Make sure the "AP Isolation" feature (which prevents devices on the same network from seeing each other) is disabled on your router. You can also try rebooting the router.
Alternative methods: third-party apps and Chromecast
If native AirPlay isn't working or your TV is an older model, you can use alternative methods. Many modern TVs support the technology. Google Chromecast Built-in. To work with a Mac, you'll need the Google Chrome browser.
Open the Chrome browser on your iMac, click the three dots in the upper-right corner, and select "Cast." In the menu that appears, select "Cast Desktop" and select your TV. This method is less optimized for macOS than AirPlay and may introduce higher latency, but it's generally applicable.
Another option is to use third-party receiver programs such as AirServer or Reflector, if available for your TV platform, or installing similar software on a connected set-top box. There are also Smart TV apps (such as "AirScreen" on Android TV) that emulate an AirPlay receiver.
⚠️ Attention: Third-party apps can introduce additional lag and reduce image quality due to additional video stream encoding. This is acceptable for watching movies, but for text processing or fast-paced games, it's better to look for native support.
When using browser streaming through Chrome, make sure to close any unnecessary tabs, as the process of encoding live video can significantly increase the system load and cause your laptop or computer to heat up.
Troubleshooting and connecting problems
Even with proper setup, issues may still occur. The most common issue is a disconnected connection or no picture despite audio. This is often due to an unstable Wi-Fi signal or channel congestion. Try switching your router to a less congested frequency or channel.
If there's no sound, check your Mac's audio output settings. Click the speaker icon in the menu bar and make sure your TV is selected as the output device, not your iMac's speakers. Sometimes, the system still outputs audio to your computer by default.
If your TV stops responding, perform a full reboot: unplug the TV for 30 seconds, reboot the router, and then turn on your iMac. You can also clear the network settings cache on your Mac by deleting the saved Wi-Fi network and reconnecting.
Check that Guest Network mode isn't enabled on your router. Devices connected to guest Wi-Fi are often isolated from the main network, which may include your TV, making connection impossible.
When Wi-Fi Isn't Enough: Wired Connections and Adapters
Wireless data transfer, while convenient, has its limitations in terms of throughput and stability. If you require maximum image quality (for example, 4K HDR at 60 Hz) or are working with color, Wi-Fi may not provide the necessary bandwidth.
In such cases, it is recommended to use a wired connection. For iMac with a port Thunderbolt 3/4 or USB-C You'll need an HDMI adapter. This will ensure uncompressed, lag-free transmission. If your TV is located far away, you can use long HDMI cables with an amplifier or fiber optic cable.
There are also special adapters that plug into the TV's USB port (if it supports reading media files), allowing you to stream content over a local network via an intermediary application on a Mac, but this is a scenario for playing files, not mirroring the screen.
Please remember that when connecting via cable, the picture quality will depend on the HDMI cable version. For 4K resolution, be sure to use cables of the following standard: High Speed HDMI or higher, marked with the appropriate marking.
Frequently Asked Questions (FAQ)
Can I connect my iMac to my TV without Wi-Fi?
Yes, this is only possible using an HDMI cable and the appropriate adapter (USB-C to HDMI or Thunderbolt to HDMI). Wireless technologies (AirPlay, Chromecast) require a working local Wi-Fi network to transfer data between devices.
Why is there no sound when connected via AirPlay?
Most likely, a different output device is selected in macOS's sound settings. Click the speaker icon in the menu bar and select your TV from the list of output devices. Also, check that the volume on the TV itself isn't turned down.
Do older Samsung or LG TVs support AirPlay?
Models released before 2018-2019 typically do not have built-in AirPlay 2 support. They require a separate set-top box (such as Apple TV) or the use of third-party apps if the TV platform supports them.
Does connecting a TV affect internet speed?
When screen sharing via Wi-Fi, part of the bandwidth is used to transmit the video stream. If the bandwidth is limited or the signal is weak, internet speed on other devices may decrease and image quality may deteriorate. It is recommended to use the 5 GHz band.