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There are many reasons your Samsung TV may have vertical lines or ghosting. 

When a Samsung TV has a connection or processing problem, you are likely to get vertical lines and ghosting. Besides, when the panel and processing board are poorly connected it may show the error. Also, this may happen if the scalar PCB, T-Con, or Cof -IC is faulty.

samsung tv

Why Is There A Single Vertical Line On My Samsung TV?

When the T-Con board is not working, or the wiring is faulty, it disconnects the TV from the screen. The disconnection makes the screen images follow each other with blurred edges. Also, when there is a poor connection between the panel and the processing board, you will likely see a single vertical line on your Samsung TV.

Besides, a fault in any of the components of your TV screen is likely to cause the problem. For instance, a fault in the scalar PCB, responsible for supplying the pixel data on the motherboard and the T-Con board, is likely to cause the problem. The T-con serves as the timing control card. So, when it is faulty, it means that it may not control the timing of pixels on the screen adequately.

Cof-iC connection problem – if you cannot connect the screen to the other part of the television, it makes it difficult for the screen to get the right pixel information. If the Cof-IC is damaged, you must replace it using the Tab bonding machine and connect the Tv components to the screen.

Damaged screen – water or excess moisture on the screen is likely to damage the screen. So, your TV is likely to display some vertical lines.

Nearby devices – if you place your TV near the microwave or air conditioner, it may show the error. Also, when you place it near an unshelled speaker and your cell phone, they may interfere with the signal and cause a shift in color. Luckily, you can fix this by changing the location of the appliances.

Loose cables and wires- loose control board cables or even grounding issues are likely to damage the screen. The solution to the problem is to have the loose wire fixed. You may also temporarily fix the problem by tapping on the back. It may stop showing the lines temporarily. However, you may try to troubleshoot the problem and fix the broken wire.

What Causes Vertical-Colored Lines On A TV Screen?

When the T-con board stops working or a loose flat cable connection, it may cause vertical lines to appear on your TV. Also, when the T-Con board is defective and not working, or there is a loose flat cable connection or a damaged T-Con board module, you are likely to end up with vertical-colored lines on your TV screen.

Besides, when the Tv frames rust and spreads to the adjacent flat cable connector, it can cause vertical-colored lines on the screen. Also, when humidity spreads to the flat cable connector, it can make the LED TV rust and result in colored lines on the screen.

The work of the T-Con is to control or synchronize image formation timing. It does this by turning the LED/LCD panel on so as to bring up images. Its shape varies depending on the TV brand. So, when a cable connecting it to the T-Con is not working due to dirt or impurities, or rust, it is likely to result in vertical; colored lines on your TV screen.

You may troubleshoot the T Con block by analyzing the V ON or VGH voltage at the T-con. The voltage should be between 25-30 V. While the G Off, or VGL voltage should be between —7 to -15V. Also, check the digital voltage Vdd on the digital module. It should range between 1.2-3.3v.

How Do I Fix Ghosting On My Samsung TV?

When the images on the screen are blurry or follow each other, we call it a ghosting problem. In some cases, when images move too fast, they may get distorted, and you are likely to have clouded effects. But this is likely to happen if the Auto Motion Plus is off.

You can fix the ghosting problem by connecting the TV to sources such as HDMI ports. It will help you know whether the problem is with the source or the TV. You may also try to disconnect the TV from the power source and wait for at least a minute before plucking it back. Also, update the firmware for TV if it is still using the oldest firmware.

You may then need to reset the picture setting by pressing the home button and going to locations on the screen. Proceed to choose pictures at the top of your left-hand side and click on the expert setting. Go to the Auto Motion Plus settings, click on it and press enter on the remote control.

While in the Auto Motion Plus, setting page scroll downward, highlight the currently being used option and press enter.

While on the Auto Motion plus setting, you may choose custom to allow you to make and select your favorable adjustments

How Do I Fix Vertical Lines On My Samsung TV?

Your TV will bring the vertical lines on the screen if it has a processing problem. This may result from a poor connection between the panel and the processing board. Luckily, this is a common problem that you can fix on your own.

Also, you may fix it by removing the flat ribbon and reinserting it. But you must be cautious because the cables are delicate and can easily get damaged. Also, ensure that connectors locking tabs are unlocked before you get them out. However, if it does not solve the issue, consider visiting an expert.

In some cases, the vertical lines could result from a faulty component. Here are some components that may have a problem and possible ways of fixing them.

Scalar PCB – if you experience vertical and horizontal lines, it could result from faulty Scalar PCB. You can fix the problem by replacing the PCB.

T-Con – a fault in the timing control card makes it difficult for the pixels to appear on time. It results in vertical lines. You can fix the problem by repairing the loose T-con or replacing it with a new one.

Cof-IC- it connects the screen to the other parts of your television. If it is damaged, no pixels will reach the screen. Therefore, you can fix it by replacing the Cof-IC using the tab bonding machine.

Sometimes the video cables connected to the TV may be the source of the problem. If the problem results from connecting the cable to the game console or the blue-ray player, you may need to disconnect it and reconnect it once again.

If the cause of the strips is a resolution issue with the video channels, you may want to open the device and adjust the resolution so that it matches the TV’s resolution. Get details of the TV’s resolution in the manual. Also, you may need to check the signal decoder. Sometimes the problem may be with the decoder. In this case, you may need to contact the provider.

If the strips result from outdated television software, updating it will solve the problem. But if it doesn’t, consider other options.

TV factory setting- sometimes the TV settings may be corrupt, making it difficult for the TV to function as it should. In such a case, you may consider resetting the TV settings to their original state.


Vertical lines or ghosting is a common issue not just in Samsung TVs but also in other brands. It may result from a faulty component or a disconnection. Ensure to troubleshoot the source of the problem before trying to fix it. If it is a defective component, get an expert to replace it.