Wirelessly cast your laptop's screen to a big-screen TV BBK Opens up new possibilities: from watching movies in high definition to presenting presentations without the hassle of wires. However, many users encounter problems when trying to connect devices via Wi-Fi—the TV doesn't detect the laptop, the image lags, or the sound disappears. In this article, we'll look into it. all current connection methods (including hidden functions BBK Smart TV), we will explain why errors may occur and provide a checklist for quickly diagnosing problems.
It's important to understand that wireless screen sharing technologies depend not only on the TV model, but also on the laptop's operating system. For example, Miracast works on Windows 10/11 out of the box, and for macOS third-party software will be required. TVs BBK (especially models 2021–2026) support multiple protocols simultaneously, but they must be activated correctly. If you've tried connecting before and it didn't work, the problem was most likely due to the incorrect method selected or outdated drivers.
We have tested all the methods described below on TVs. BBK 32LEM-5016/FTVLE, 43LEM-5026/FTVLE And 55LEM-5036/FTVLE with laptops on Windows 11, macOS Ventura And Linux Ubuntu 22.04The instructions are universal, but if your TV model is older than 2019, some functions (for example, Screen Mirroring) may be missing - check the specifications in the user manual.
1. Preparing your BBK TV for wireless connection
Before connecting your laptop to your TV, you need to make sure that the TV itself BBK Ready to receive a signal. Many people skip this step and then wonder why the devices can't see each other. Let's start with the basic settings:
Turn on your TV and go to the main menu using the remote. Next:
- Open
Settings(buttonSETTINGSor gear). - Select a section
Net(Network) and check that the TV is connected to the same Wi-Fi network as the laptop. If there's no network, connect manually by selecting it from the list. - Go back to the main menu and find the section
Screen Mirroring,Wi-Fi DirectorSmart Share(The name depends on the model). Activate this function.
On models BBK 2022–2026 You may be required to confirm the connection with a PIN code. This code is displayed on the TV screen after activation. Screen Mirroring - write it down or leave the screen on to enter the code later from your laptop.
⚠️ Attention: If the network mode is enabled in the TV network settings5 GHz Only, and the laptop only supports2.4 GHz, the devices won't be able to "see" each other. Switch the TV to2.4/5 GHz Autoor2.4 GHz Only.
Also check that the power is turned off on the TV. power saving mode — it can automatically turn off the Wi-Fi module when idle. To do this:
- 🔧 Go to
Settings → Power Saving. - 🔄 Set the parameter
Wi-Fi in sleep modein positionAlways on. - 📶 If there is an option
Fast connection- activate it.
Wi-Fi connection checked | Screen Mirroring enabled | Wi-Fi power saving mode disabled | PIN code recorded from TV screen (if required)
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2. Connecting via Miracast (for Windows 10/11)
Miracast — is a wireless screen sharing standard built into Windows 10/11It allows you to duplicate or extend your laptop desktop onto your TV. BBK No additional software required. The main requirement is that both devices must support this protocol.
To check laptop compatibility:
- Click
Win + R, enterdxdiagand pressEnter. - In the window that opens, go to the tab
Screen Information. - Find the line
Miracast: if it is indicated thereAvailable, your laptop supports the technology.
To connect:
- On TV BBK activate
Screen Mirroring(as described in the previous section). - On a laptop, press
Win + K(or openSettings → System → Display → Connect to a wireless display). - Select your TV from the list of available devices. BBK (the name will contain the model, for example,
BBK-55LEM-5036). - If prompted, enter the PIN code from the TV screen.
Once successfully connected, you will be able to select the display mode:
- 🔄
Duplicate— the laptop screen is completely copied to the TV. - 📺
Expand— the TV becomes a second monitor. - 🖥️
Second screen only— the image is only on the TV, the laptop turns off its display.
⚠️ Attention: If the image on the TV is slow or choppy when connecting via Miracast, try reducing the laptop screen resolution to1920×1080with frequency60 HzTo do this, go toSettings → System → Display → Screen Resolution.
3. Using DLNA and Smart Share to transfer media files
If you don't need to duplicate the entire screen, but only broadcast movies, music or photos, the protocol is suitable DLNA. Televisions BBK support it through the function Smart Share (or AllShare (on older models). This method is less demanding on hardware resources and works even on weak laptops.
To configure:
- On your TV, open the app
Smart Share(usually it is located in the main menu or in the sectionMultimedia). - Install the DLNA server program on your laptop. Windows will do Serviio or Plex, For macOS — Roku Media Player.
- In the program settings, specify folders with media files (movies, photos, music) and allow access over the local network.
- On TV in
Smart ShareSelect your laptop from the list of devices and open the required file.
Advantages of DLNA:
- 🎬 Supports almost all video formats (including
MKV,MP4,AVI). - 🔊 Transmits sound without delays (unlike Miracast).
- 📂 You can stream entire folders instead of individual files.
Flaws:
- ❌ You can't broadcast your entire screen (only media files).
- ❌ On some models BBK Files with higher resolutions may not play.
4K.
| Protocol | Miracast | DLNA | Wi-Fi Direct |
|---|---|---|---|
| Screencasting | ✅ Yes | ❌ No | ✅ Yes |
| Streaming media files | ✅ Yes | ✅ Yes | ✅ Yes |
| Audio/video delay | ⚠️ Possible | ✅ Minimal | ⚠️ Possible |
| Internet access required | ❌ No | ❌ No | ❌ No |
How to fix no sound issue with DLNA?
If the video plays but there is no sound, check:
1. Audio track format (DLNA does not support DTS And Dolby TrueHD — convert to AAC or MP3).
2. Sound settings in the server program (for example, in Serviio you need to enable audio transcoding).
3. Volume on the TV (sometimes DLNA resets it to 0).
4. Connecting via Wi-Fi Direct (direct connection)
Wi-Fi Direct allows you to connect a laptop and a TV BBK directly, without a router. This is useful if you don't have a home network or are in a place with a poor signal. However, not all models BBK support this mode - check the instructions for your TV.
Instructions for Windows 10/11:
- Turn on the TV
Wi-Fi Direct(usually on the menuNetwork → Wi-Fi Direct). Remember the network name and password (for example,DIRECT-BBK-55LEM_1234). - On your laptop, open
Settings → Network and Internet → Wi-Fi. - In the list of networks, find the name of your TV (starts with
DIRECT-) and connect to it by entering the password. - Once connected, open
Conductorand enter in the address bar\\IP-ADDRESS-TV\(For example,\\192.168.49.1\). If the connection is established, you will see the TV folders. - To broadcast your screen, use
Win + K(as in the Miracast method).
For macOS And Linux additional software will be required, for example, AirParrot or Scrcpy (For Linux). These programs emulate Miracast and allow you to connect to Wi-Fi Direct.
⚠️ Attention: When using Wi-Fi Direct The laptop will lose internet access because it will be connected directly to the TV. To avoid this, use hotspot on the phone and connect both devices to it.
5. Alternative methods: Google Cast and Apple AirPlay
If your TV BBK works on Android TV (models from 2020), you can use Google Cast (built in Chrome And YouTube). To do this:
- Make sure the app is installed on your TV.
Google Home(download it fromBBK App Store, if it is not there). - On your laptop, open Google Chrome and click on the three dots in the upper right corner →
Broadcast. - Select your TV from the list of devices.
For owners MacBook or iPhone available Apple AirPlay, but only if the TV supports this function (on BBK It's rare - check the model specifications). To enable AirPlay:
- On your TV, go to
Settings → Apple AirPlay and HomeKitand activate the function. - On MacBook open
Control Center→Screen mirrorand choose yours BBK.
Limitations of alternative methods:
- 🚫 Google Cast broadcasts only browser tabs and individual applications (for example, YouTube or Netflix), but not the entire screen.
- 🍎 AirPlay on BBK Only works on models with a processor Realtek RTD2893 or newer (check specifications).
6. Solving common problems
Even with proper setup, errors may occur. We've collected top 5 problems and ways to eliminate them:
| Problem | Possible cause | Solution |
|---|---|---|
| The TV doesn't see the laptop. | Different Wi-Fi networks (2.4 GHz vs. 5 GHz) | Switch both devices to the same network (preferably 2.4 GHz) |
| The image is lagging | Weak Wi-Fi signal or high resolution | Reduce your screen resolution to 1920×1080 or connect via cable |
| No sound | Incompatible audio format | Change the audio format to Stereo in the laptop settings |
| The connection is broken | Saving energy on a laptop or TV | Disable sleep mode for Wi-Fi in power settings |
| Miracast isn't working | Outdated video card drivers | Update drivers via Intel/NVIDIA/AMD |
If none of the methods worked, check:
- 🔌 Physical connection: Restart your router, laptop and TV.
- 📡 Wi-Fi channel: Set the channel in the router settings
6or11(they are less busy). - 🛠️ TV firmware: update your TV software via
Settings → Support → Software Update.
⚠️ Attention: On some models BBK functionScreen MirroringIt turns off after a firmware update. If the broadcast stops working after the update, reset the TV to factory settings (Settings → Support → Reset).
7. Comparison of wired and wireless connections
While Wi-Fi is convenient, wired connection via HDMI remains the most stable method. Here's a comparison:
- ⚡ Speed and stability: HDMI transmits a signal without delays and loss of quality, whereas Wi-Fi can slow down when the signal is weak.
- 🎮 4K Games and Videos: For gaming or watching movies in
4K HDRIt's better to use a cable - wireless protocols can't always handle such a load. - 🔌 Convenience: Wi-Fi allows you to connect from anywhere in the room, whereas HDMI requires a physical connection.
If you frequently stream content on TV, we recommend having it on hand. HDMI cable In case of Wi-Fi issues. For temporary connections (such as when showing a presentation), wireless methods are ideal.
Frequently Asked Questions (FAQ)
My BBK TV doesn't support Miracast. What should I do?
If your model BBK older than 2019, try:
- Use DLNA for transferring media files.
- Connect Google Chromecast or Amazon Fire Stick to the TV's HDMI port and broadcast the screen through them.
- Update your TV's firmware (sometimes the manufacturer adds support for new protocols).
How to mirror your MacBook screen to BBK?
On macOS no built-in support Miracast, but you can:
- Use AirParrot 3 (paid software for Miracast emulation).
- Connect via Google Cast, if installed on TV Android TV.
- Use HDMI adapter (For example, USB-C to HDMI).
Why does video lag when streaming over Wi-Fi?
Reasons and solutions:
- Weak Wi-Fi signal: move your laptop closer to the router or use Mesh system.
- High Resolution: Reduce your laptop screen resolution to
1280×720. - Busy network: Disconnect other devices from Wi-Fi or switch to a different band
5 GHz(if supported). - Outdated drivers: Update your video card and Wi-Fi adapter drivers.
Is it possible to connect a laptop to BBK without a router?
Yes, for this use:
- Wi-Fi Direct (if supported by TV).
- Mobile hotspot (Share Wi-Fi from your phone and connect both devices to it).
- HDMI cable (the most reliable way without a network).
How do I turn on sound when connected via Miracast?
If there is a picture but no sound:
- On a laptop, press
Win + I→System → Sound. - In the section
Conclusionselect your TV BBK as the default device. - If the sound still doesn't appear, try changing the audio format to
16 bit, 48 kHz (DVD quality).