How to Fix a TV With Lines on the Screen

Lines on your screen can be one of the most frustrating problems to come up. Luckily, however, they can usually be fixed easily unless there’s a more serious hardware issue present in your TV.

To address this problem, it’s necessary to determine its source – this could be anything from a loose ribbon cable or T-Con board damage.

1. Check the Connections

Lines on a TV’s screen could be an indicator that there’s an issue that needs addressing, so the first thing you should do is verify all connections on it.

As soon as the back panel of your TV is open, you should be able to see some circuit boards – such as T-Con boards that translate signals into images, power boards and motherboard boards – behind it all.

The T-Con board is an essential component of your TV display, serving to convert signals from input devices into picture. When malfunctioning, however, this board can cause horizontal or vertical lines to appear on its screen – an unpleasant sight!

Horizontal lines may also be caused by a malfunctioning ribbon cable linking the T-Con board to your TV’s screen. If this ribbon cable is responsible, replacing it may help resolve your problem.

If the T-Con board on your TV is defective and requires replacement, the next step should be testing all other components on it in order to identify where its line problem lies and fix it.

Opening up the back of your TV and inspecting all its circuit boards can also help identify what may be causing horizontal lines on it.

Remove all of the screws securing the TV’s back panel by carefully unscrewing each one – this process should not place undue stress or pressure on individual screws as they could become loose if put under too much strain.

Once the back of your TV has been removed, you should be able to identify two components – T-Con board and motherboard board – depending on its model and placement in its display.

After thoroughly inspecting all cables, try disconnecting and reconnecting each one individually to see if this helps resolve the issue. This approach may prove particularly helpful if only half of your screen displays lines.

2. Check the T-Con Board

The T-Con Board is an integral component of your TV display panel and should it become damaged or malfunction, it could significantly degrade picture quality and viewing pleasure.

LCD and LED televisions feature an in-panel T-Con board to manage brightness, color and contrast for each pixel on their display panel.

Check your T-Con Board by taking steps such as taking off the back cover of your TV. If this proves too difficult for you, consider seeking professional help to install or replace it.

Manufacturers commonly include T-Con Boards in LCD televisions, though you may also find them in other types. A T-Con Board is an integral component to your television, so if there are signs that it needs replacement it’s wise to get it replaced immediately.

Cracked T-Con Boards cause vertical lines to appear on your screen when they fail to connect with flat cables that transport signals between it and your screen.

The T-Con Board is a small board connected to your screen via LVDS cables. As this connection type can be fragile, be careful when disconnecting or installing or unplugging it from your TV.

If you are replacing the T-Con Board, copy all heat/insulation pads as well as smooth wires over. Once all components have been transferred, attach and flip the assembly over. Finally, temporarily secure the T-Con Board to its shield with electrical tape so it does not move while installing it back into your screen.

Flickering lines on your TV’s screen is another common symptom of T-Con Board malfunction, usually caused by an inaccurate clock signal from it. By blocking this faulty clock signal on T-Con Board you may be able to clear away those annoying flickering lines on screen and clear away their appearance altogether.

Sticky tape can help block an incorrect clock signal by placing it over one of the T-Con ribbon cables, which allows another clock signal from across the board to compensate for it and thus eliminate flickering lines on your Vizio TV screen.

3. Replace the Screen

Problematic lines on a TV screen can be frustrating, but there are ways you can fix them. Checking connections, checking T-Con board connections, and replacing the screen are among them.

Check Your Connections

Loose cable connections may cause lines to appear on a television screen, so be sure all cables are tightly fastened. Also try unplugging any external devices from the television and testing to see whether that device or screen itself are the source of problems.

If you’re having difficulties, perform a picture test. Many modern televisions provide this function so that you can assess image quality and determine why there are lines across your image.

Picture tests will enable you to identify whether it is your screen that is the cause or if any connected devices may be interfering. It is helpful if all connected devices can be removed so as to gain a clearer view of the picture.

T-Con boards are used in most modern televisions to generate horizontal and vertical signals that are sent to the display panel for display. Dust particles can sometimes obstruct these signals, so it is wise to regularly clean your T-Con board to maintain optimal signal transmission.

Reseating ribbon cables on the T-Con board to see if any are loose can also help narrow down and temporarily resolve problems.

Remove the back panel of your TV and clean out any dust to help identify its issues. Older TVs tend to accumulate dust more readily, so be sure to do a thorough job cleaning out before trying to repair its screen.

Rather than trying to repair your TV on your own, if you lack either the time or patience it would be wiser to contact a professional repair service for help. These repairs often require technical knowledge as well as understanding of electronics for proper execution; so it may be best suited for someone with more experience than yourself to take on this task.

4. Reset the TV

Reasons behind lines on your television screen could include issues with its internal hardware such as its motherboard or power board, among others. Though frustrating, they’re usually fixable.

Resetting your TV may be one possible solution to problems on its screen. Resetting will reset all settings back to their default values and will delete any custom configurations you may have made. Therefore, it is strongly advised that you keep a list of your personal settings and data that could be restored after reset has taken place.

Before performing a factory reset on your TV, ensure it is off and unplugged from an electrical outlet. Press and hold both Volume Down and Power buttons simultaneously on your television screen to complete this step.

As soon as your TV has finished resetting, you should see the Sony logo appear. Once done, it should restart automatically with a message acknowledging its reset.

If the problem still persists after performing a hard reset, try using another approach instead – such as performing a Soft Reset which won’t erase personal data or settings from your device.

Resetting to factory settings will restore your television back to its factory settings and may provide relief from many issues, especially those more persistent ones.

The Soft Reset method is simple and doesn’t require any tools or knowledge of TV usage to complete successfully. It provides an effective yet safe method of resetting your television; just make sure your hands don’t touch any plugs with moisture-soaked hands!

For an easier way to reset your TV, perform a ‘Factory Data Reset’ which will delete all personal settings and data stored on it. This method may also be helpful if you can’t access the settings menu or don’t own a remote control device.

If the Factory Data Reset doesn’t work as intended, it is recommended to contact your manufacturer’s support center or arrange to have your TV serviced by an expert technician. They can determine where the problem lies quickly and cost-effectively.