Problem Description

Your Samsung UN50TU7000 50” Crystal UHD TV shows a black screen with vertical gray bars, but the sound still works. This issue persists after power cycling, indicating a likely hardware failure, such as a faulty T-Con board, main board, or display panel.

Troubleshooting Steps

• Run the Built-in Picture Test: Press Home > Settings > Support > Device Care > Self Diagnosis > Picture Test. If bars appear, it’s a hardware issue.
• Force a Firmware Update: Go to Settings > Support > Software Update > Update Now or use a USB with firmware from Samsung’s website.
• Factory Reset via Service Menu: Turn off TV, then press Mute > 1 > 8 > 2 > Power. Select Option > Factory Reset > Yes. Caution: Advanced; note original settings.
• Check for Overheating/Connections: Ensure vents are clear, unplug for 30 minutes, and reseat HDMI cables. Test built-in apps (e.g., YouTube).

Repair vs. Replace

Option

Pros

Cons

Cost (2025 USD)

DIY T-Con Replacement

Cheap parts; fixes 70% of issues.

Requires skill; voids warranty.

$20-50 (parts)

Professional Repair

Accurate diagnosis; T-Con/main board fix.

Labor costs; not always covered.

$100-250

Samsung Repair/Warranty

Free if under warranty; known issue fixes.

Out-of-warranty fees; shipping hassle.

$0 (warranty) or $300+ (panel)

Replace the TV

Newer models (e.g., DU7200) more reliable.

Upfront cost; lose old TV.

$300-500 (new 50” Samsung)

Recommendation: Try T-Con replacement if TV is <5 years old. If repair costs >$200, consider replacing with a newer model like the 2025 Samsung DU7200.

Next Steps

• Contact Samsung: Call 1-800-SAMSUNG or visit samsung.com/us/support. Mention “UN50TU7000 vertical gray bars.” Check warranty with model/serial number.
• Get a Repair Quote: Search “TV repair near me” or use iFixit for DIY guides. Expect ~$50 diagnostic fee.
• Consider Replacement: Look at 2025 Samsung DU7200 (50”, ~$400) for better reliability.