Customer Ratings & Reviews

Hi JasonS,

Thank you for your feedback regarding the screen abnormalities you're seeing on your TV. To help determine if the issue is related to the panel itself, we recommend starting with a Picture Test, which displays a high-definition image you can examine for flaws: Settings > Support > Device Care > Self Diagnosis > Picture Test.

If the issue appears during the test and across all sources (built-in apps, HDMI devices, etc.), it may indicate a panel-related concern.

You can also try displaying solid-color test videos (red, green, blue, black, white) from a USB drive or YouTube. This can help you identify whether any pixels are stuck or not functioning properly.

In some cases, unplugging the TV for a few minutes and rebooting it can help resolve stuck pixels caused by temporary display behavior.

If the problem persists after these steps, the TV may require service. To set up a service appointment, please contact Samsung Support at 1-800-SAMSUNG, 8AM – 12AM EST, 7 days a week. LiveChat and additional support resources are also available through the Support link on our website.

~ Samsung Advisor

Hi GrahamB,

We appreciate your feedback on the available inputs on the U7900 TV. If an Optical port is a crucial part of your setup needs, you’ll find that connection starting with our Q8F Series and above.

For future purchases, we recommend double-checking the product specs on Best Buy’s site to ensure the model you choose has the ports you need. You’ll find the full list under the “Specifications” tab (just beneath the Highlights section): https://www.bestbuy.com/product/samsung-85-class-u7900-series-uhd-4k-smart-tizen-tv-2025/J3ZYG2VFX5

Should you ever need assistance with your TV, Samsung is here for you. Reach out by calling 1-800-SAMSUNG between 8AM - 12AM EST, any day of the week. You can also chat with us online by visiting the ‘Support’ section of our website.

~Samsung Advisor

Hi ZeGS,

Thanks for your review. If you're seeing intermittent black screens, it's often related to HDMI cable connection or an issue with an external device. We'd appreciate the opportunity to walk you through a few checks and help get things working as expected.

Please call Samsung Support at 1-800-SAMSUNG, 8AM – 12AM EST, 7 days a week. LiveChat with an agent as well as product manuals, software, and warranty info can also be found under the ‘Support’ link on our website.

~ Samsung Advisor

Hi RoseanneE,

We appreciate you sharing details about the flickering you’ve noticed on your Samsung U7900F TV. This behavior may be related to energy-saving features or dynamic picture settings that adjust the screen brightness automatically.

Please try disabling the following features: Settings > All Settings > General & Privacy > Power and Energy Saving
• Brightness Optimization
• Energy Saving Solution
• Motion Lighting

If these are already off, check if Contrast Enhancer is enabled, which can also cause brightness to shift depending on content: Settings > All Settings > Picture > Expert Settings > Contrast Enhancer

To ensure optimal performance, please also confirm your TV is running the latest firmware: Settings > Support > Software Update > Update Now

We hope these steps help stabilize your screen brightness. If you continue to experience issues, please don’t hesitate to contact Samsung Customer Support at 1-800-SAMSUNG, 8AM – 12AM EST, 7 days a week. LiveChat is also available via the ‘Support’ link on our website.

~ Samsung Advisor

Hi ShawnH,

To best assist you, please call us at 1-800-SAMSUNG, 8AM – 12AM EST, 7 days a week. LiveChat agents are also available at the ‘Support’ link on our website.

~Samsung Advisor

Hi Came,

Thank you for sharing your experience with Wi-Fi connectivity. If your TV is having trouble connecting to the network, the following steps may help resolve the issue:

Signal & Setup Tips:
1. Check TV-to-router distance – Your TV should be within 50 feet of the modem or access point for reliable signal strength.
2. Minimize interference – Turn off nearby wireless devices and make sure there are no physical barriers (stone walls, fireplaces, appliances) between the TV and router.
Power Cycle Devices:
3. Restart both your TV and router – Unplug both devices for at least 30 seconds, then plug them back in and allow them to reboot fully.
Connection Type:
4. Evaluate your connection method –
o If using Wi-Fi, move your router closer to the TV and eliminate any obstructions.
o For a more stable connection, we strongly recommend using a wired Ethernet cable.
o If already using Ethernet, verify the cable is working by testing it with another device.
Run Built-In Diagnostic Tools:
5. Network Test: Settings > Support > Device Care > Self Diagnosis > Smart Hub Connection Test
6. Wi-Fi Check: Settings > Support > Device Care > Self Diagnosis > Wi-Fi
Last Resort:
7. Perform a Factory Reset (if issues persist): Settings > All Settings > General & Privacy > Reset > Factory Data Reset. Note that this will return all settings to their original defaults.

If these steps don’t resolve the issue, please reach out to Samsung Support at 1-800-SAMSUNG, available 8AM – 12AM EST, 7 days a week. LiveChat support and additional help are available at the ‘Support’ link on our website.

~Samsung Advisor

NinaA,

We appreciate you taking the time to let us know about your experience with your U7900F TV. So that we can better troubleshoot this issue and provide steps towards a solution, please contact Samsung Support at 1-800-SAMSUNG, 8AM – 12AM EST, 7 days a week, or visit our website for LiveChat.

~ Samsung Specialist

Hi JoseC,

We’re sorry to hear that the picture on your Samsung U7900F TV appears too dark. If this isn’t meeting your expectations, there are several settings you can adjust to improve the overall brightness and clarity of your screen.

First, try disabling certain energy-saving features that may be dimming the screen automatically. Go to: Settings > All Settings > General & Privacy > Power and Energy Saving, then turn off Brightness Optimization, Energy Saving Solution, Motion Lighting, and/or Contrast Enhancer.

Next, adjust the Picture Mode to better match your viewing environment: Settings > All Settings > Picture > Picture Mode and choose from the following:
• Dynamic – Brighter and clearer for well-lit rooms
• Standard – Balanced for most environments
• Movie – Ideal for watching in a dark room
• Eco – Designed for energy savings
• Filmmaker Mode – Preserves the creator’s original intent

You can also manually adjust brightness by going to: Settings > All Settings > Picture > Expert Settings > Brightness. Use the slider to set a level that suits your preferences (0–50).

Finally, we recommend making sure your TV has the latest software installed: Settings > Support > Software Update > Update Now

We hope these tips help improve your viewing experience. If you need further assistance with setup or adjustments, feel free to contact Samsung Customer Support at 1-800-SAMSUNG, available daily from 8AM - 12AM EST. You can also visit the Samsung website and click on ‘Support’ for:
• Live Chat
• Manuals, Software, & Warranty Info

~ Samsung Advisor

user290488,

Thank you for sharing your experience with your U7900F TV. If there's anything we can assist with, we're here to help. Call us at 1-800-SAMSUNG, available from 8AM - 12AM EST, seven days a week. Or visit the Samsung website and click on the ‘Support’ link for:
• LiveChat with an agent
• Manuals, Software, and Warranty Info
• Creating a Service ticket

~ Samsung Specialist

Hi AdamF,

We appreciate your feedback on the picture quality of Samsung’s U7900 TV. If the image doesn’t quite match your preferences, there are several adjustments you can make to better suit your viewing environment and content type.

First, please ensure your TV is running the latest firmware, as updates may include important picture quality enhancements. Go to: Home > Left directional button > Settings > Support > Software Update > Update Now

To explore picture mode options, navigate to: Home > Left directional button > Settings > All Settings > Picture > Picture Mode. Options include:
• Standard – Ideal for general viewing
• Dynamic – Brighter and more vibrant for well-lit spaces
• Eco – Optimized for energy efficiency
• Movie – Best for viewing in low light
• Filmmaker Mode – Preserves the content creator’s intent and disables motion smoothing for supported content

You can further customize your image by going to: Settings > All Settings > Picture > Expert Settings, where you can adjust Brightness, Contrast, Color Tone, Sharpness, Contrast Enhancer and more.

If you’d like help finding the best picture settings for your preferences, please don’t hesitate to contact Samsung Support at 1-800-SAMSUNG, available 8AM – 12AM EST, 7 days a week. You can also LiveChat with an agent or explore additional resources on our website by clicking the ‘Support’ link.

~Samsung Advisor

Hi Retiredbishop,

We apologize for any inconvenience. Please know the Spectrum app is available and compatible with the U7900 TV. For best results, please ensure your TV is up to date with the latest Firmware update. Go to Settings> Support> Software Update.

If you continue to have issues, please call us at 1-800-SAMSUNG, 8AM – 12AM EST, 7 days a week. LiveChat is also available via the ‘Support’ link on our website.

~Samsung Advisor