![]() Most Vizio TVs support auto-updating of firmware, but you can’t assume that this is turned on for you, unless you are using a Smart Vizio TV, where auto-updates are always on. Software and firmware issues have been known to cause problems with the display on Vizio TVs.Īs with any product, you should ensure that you have updated your TV’s firmware to the latest version, even if it is new. You can also plug your TV into another wall socket, preferably one located on the other side of the room from the current socket, again without any surge protectors or consumer extension cords that you might be using. If you don’t have a wall socket testing rig, then just unplug your TV, remove any surge protectors and try another appliance that you know draws a similar current. The most common cause of low voltage from wall sockets are faulty surge protectors. If your TV is on, then you know that your wall socket is suppplying power, but the question is whether this is constant without fluctuations and is of a sufficient voltage. Make sure that you hold down the physical power button on your TV, not the one on the remote.Īlthough this might seem a basic step, it’s surprising how often power cycling your TV will help to fix it.īecause flat screen TV’s rely on a constant power supply, when there are fluctuations in voltage these can show up as horizontal lines on screen. Leave your TV unplugged for at least 30 minutes.Hold down the physical power button on your TV for at least 15 seconds to drain any residual power from the capacitors.Power cycling your TV will clear out any issues with non-permanent memory without losing your personal settings. With modern electronics, it’s possible that the horizontal lines on your Vizio TV are caused by something stuck in your TV’s flash memory. If the lines have gone, then try re-seating your HDMI and other cables one by one, until you find the damaged cable that needs replacing. If they are, this means that your external connections are fine and the problem is located within the TV. Pull up the on-screen menu to see if the lines are still there. When you turn your TV on, this means the screen will be black as it is not receiving any picture, potentially making it tough to see any lines. You can also try removing all external devices, including those connected by Bluetooth and any coaxial or signal cables, so that the TV only has a power cable going into it. Firmly push the cables back into their slots on the TV.If you don’t have compressed air, then blow gently on them. If you have any compressed air, use that to clean the contacts both of the cable and in the connector on the TV.Remove any HDMI or other physical cables connected to the back of your TV.There’s a strong possibility that a poorly seated cable is creating signal noise which is displaying on screen as horizontal lines. Note that there are quite a few possible causes of horizontal lines, so it pays for you to first make a note of the exact types of horizontal line you are seeing so that you can match them to a solution. So, if your TV was purchased within the last year, or has an extended warranty, you are much better to contact Vizio’s service center before performing any of the more invasive fixes. ![]() I’ll go into more detail on the possible fixes below for Vizio TV horizontal lines on screen, but remember before you do anything, that removing your TV’s back panel is likely to void your warranty. ![]() If needed, remove the TV’s back panel and re-seat the T-Con ribbon, using compressed air to clean its contacts. Fix horizontal lines on your Vizio TV screen by unplugging your TV from the wall outlet, then re-seat all HDMI and other connection cables in the back of the TV, before plugging it back in again. ![]()
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