If you’re seeing lines on your TV screen — whether they’re horizontal or vertical — it can be frustrating and confusing. Fortunately, these lines can often point you in the direction of the problem, helping you figure out whether it’s a quick fix or a sign that it's time for a replacement.
In this article, we’ll break down what those lines mean, what to check, and how to determine whether a simple replacement part or a new TV is the best solution.
Would you rather watch a video? Check out our helpful YouTube video on fixing the lines for a Samsung TV!
🔴 Horizontal Lines on the TV Screen: What’s Happening?
When it comes to horizontal lines, the issue usually lies in the screen itself. These lines are often caused by a defect within the display panel, which is typically not repairable.
Possible Causes:
-
Defective Screen: Horizontal lines are most commonly caused by problems with the screen’s internal components, like damaged pixels or a malfunctioning LCD panel.
-
Screen Damage: Physical damage, such as drops or impacts, can also result in horizontal lines across the display.
What to Do:
-
Unfortunately, Screen Repair is Not Cost-Effective: Horizontal lines 999 times out of 1000 mean that the screen itself is defective. Replacing the screen is usually not cost-effective compared to purchasing a new TV.
-
Recommendation: If your TV has horizontal lines, it may be time to consider a new TV. If you're set on repairing it, you could try getting a quote from a local repair shop, but be prepared that screen replacement can be pricey.
-
If you are absolutely adamant about trying to replace a circuit board to fix this issue, there are some extremely rare cases where replacing the T-con board can resolve horizontal lines. We almost NEVER recommend this, since it generally doesn’t resolve the issue, but if you want to try something, you can try replacing the T-con!
🟢 Vertical Lines on the TV Screen: What’s Happening?
Vertical lines, on the other hand, are often caused by a fault with the T-CON board or main board. This makes it a much more straightforward repair in many cases.
Possible Causes:
-
T-CON Board Failure: The Timing Control (T-CON) board is responsible for controlling the signals that drive the pixels on the screen. If it fails, it can result in vertical lines. This is a relatively common issue, and a T-CON board replacement can often resolve the problem.
-
Main Board Issues: If the T-CON board doesn’t resolve the issue, the main board might be the next suspect. If your set doesn’t have a T-con, then
What to Do:
-
Start with the T-CON Board: If you’re seeing vertical lines, replace the T-CON board first. This is often the culprit and can save you from more costly repairs.
-
Check the Main Board: If replacing the T-CON board doesn’t work, the next step would be to replace the main board.
🧰 Troubleshooting: Horizontal Lines vs. Vertical Lines
|
Issue |
Horizontal Lines |
Vertical Lines |
|
Common Causes |
Defective screen or screen damage |
T-CON board failure or main board malfunction |
|
Fix |
Unfortunately, a new screen is needed |
Replace the T-CON board, then the main board if needed |
|
Repair Cost |
Expensive or not worth repairing |
Relatively low-cost fix with parts replacement |
🛠 What Should I Do Next?
-
Horizontal Lines: If your TV is showing horizontal lines, the screen is most likely defective. Replacing the screen is often not a cost-effective solution. In this case, it might be best to invest in a new TV.
-
Vertical Lines: Start by replacing the T-CON board. If that doesn’t fix the issue, the main board might need to be replaced.
💬 Need Help?
If you’re still unsure about the issue or need to replace a part, reach out to TVpartsToday. We can help you identify the exact cause of the problem and provide the right replacement part!
Would you rather watch a video? Check out our helpful Troubleshooting 101 playlist over on YouTube!
Would you rather chat with a seasoned repair expert? Head on over to our TVRepairHelp subReddit!
📦 Need help finding the right board or part?
📞 Call us at 930-212-1975 or browse our inventory online.
🛠️ DIY-friendly parts, fast shipping, and expert support – only at TVpartsToday.