Samsung B640 Series User Manual
![Samsung B640 Series TV manual cover](/images/dPHDcaEuFCCOmHHSTLCHhTxq/thumbs/thumb175x175.webp)
To connect your Samsung B640 Series TV to Wi-Fi, press the Menu button on the remote, navigate to Network, select Network Settings, choose Wireless, and follow the on-screen instructions to connect to your Wi-Fi network.
If your Samsung B640 Series TV won't turn on, first check the power cable and ensure it's securely connected. Try using a different power outlet. If the issue persists, unplug the TV for a few minutes, then plug it back in and try again.
To update the software, press the Menu button, navigate to Support, select Software Update, and choose Update Now. Ensure your TV is connected to the internet for the update process.
For optimal picture quality, set the picture mode to Movie or Standard, adjust the backlight to your room's lighting, and ensure the sharpness is set to a mid-level. Adjust the color temperature to Warm2 for a more natural tone.
To perform a factory reset, press the Menu button, go to Support, select Self Diagnosis, and choose Reset. Enter the PIN (default is 0000) to confirm. Note that this will erase all settings and data.
Check if the TV is muted or if the volume is set too low. Also, ensure that external devices are properly connected. If using external speakers, verify the audio output settings in the TV's menu.
Connect external devices like a Blu-ray player or gaming console using HDMI cables. Insert the HDMI cable into the HDMI port on the TV and the device. Select the corresponding HDMI input using the Source button on the remote.
Ensure that the input resolution matches the TV's capabilities. Check the HDMI cables for any damage or try using a different cable. Adjust the picture settings and ensure the TV's firmware is up to date.
Press the Menu button, navigate to Settings, select Accessibility, and enable Subtitles. You can customize the subtitle appearance and language settings from this menu as well.
To clean the screen, turn off and unplug the TV. Use a microfiber cloth slightly dampened with water or a gentle screen cleaner. Avoid using paper towels, rough materials, or any cleaners containing alcohol or ammonia.