• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

FlatScreenTech.com - LED/LCD, OLED, Smart TV Info & Repair Blog

  • Home
  • TV Repair Resources
    • LCD TV Repair
    • Plasma TV Repair
    • LCD Monitor Repair
    • Projection TV Repair
    • TV Repair Parts
    • Service Manuals
  • Other Resources
    • Electronics Troubleshooting
    • Laptop Repair
    • Finding Burnt Resistor Values
    • Safety Warning
  • Repair Videos
You are here: Home / Brands / LG / LG, Sanyo, Panasonic & Samsung LCD TV Vertical or Horizontal Lines Fix

LG, Sanyo, Panasonic & Samsung LCD TV Vertical or Horizontal Lines Fix

In this post we present another notorious issue that many encounter on their flat screen LED/LCD TV displays. Below are 2 videos showing how to fix TV displays that are manifesting the annoying horizontal and/or vertical lines problem.

The first video shows how to troubleshoot and fix an LG flat screen TV (model 42LN5400). Note that this may also be applicable to other brands (e.g., Sanyo, Panasonic, Samsung, Vizio, etc.). One key thing to determine here is whether the horizontal or vertical lines are flickering on and off and aren’t permanent. If the lines are permanent, then this may be indicative of a bad LCD panel which is a more complicated problem that can’t be fixed easily (or cheaply). The video does a great job showing examples to help differentiate the possible causes of the lines appearing on the screen.

Video 1: Fixing Horizontal Lines for an LG LED TV Model 42LN5400

The common culprit that first needs to be investigated is the possibility of a faulty T-Con board and the video shows possible symptoms of this problem, where to source it and how to replace it. The symptoms to watch out for include:

  • Discolored screen
  • TV glowing but showing no pictures
  • Only half of the screen is displaying images
  • Horizontal and vertical lines
  • Screen is all white

True enough, replacing the T-Con board fixed the issue here.

One key thing to note is that there are more than one different kinds of horizontal and vertical lines that can manifest on an LED/LCD TV screen. Case in point, if the lines are horizontal, permanent and solid black then it is highly likely a bad LCD panel itself. Vertical lines are more likely indicative of a bad T-Con board or possible connection issues with the T-Con board.

In the next video below a similar problem of vertical lines showing on the screen but with an added complication of the TV turning off and then on by itself. This seems to be a bit more complicated problem and the video provides the step-by-step instructions on how to troubleshoot and repair the problem. Note that the T-Con board is also included in the troubleshooting process here.

Video 2: Fixing a Samsung TV Displaying Vertical Lines and Cycling Off and On by Itself

Key safety tip: Unplug your TV before performing any steps. Note that if the Standby light is on, then there is standby voltage going into the main logic board. Be safe.

Video Credits for this post: Tampatec and Fix Netflix

Related: Vizio and LG LCD TV Repair: LED backlight repair or replacement

Please follow and like us:
error
fb-share-icon
Tweet

Filed Under: LG, Panasonic, Repair Videos, Samsung, Sanyo, Troubleshooting Tips

Recent Articles

  • Enhancing Education: The Transformative Role of Flat Screen Displays in Classrooms March 31, 2024
  • Reviving Your Sluggish Smart TV: Tips to Speed Up Performance March 27, 2024
  • Navigating the Curves: A Guide to Repairing Curved TV Displays February 23, 2024
  • Revolutionizing Home Entertainment: Unveiling the Cutting-Edge TV Technologies from CES 2024 February 21, 2024
  • Screen flashing on & off on an LG 49LF5500 LED TV (LED backlights problem fix) May 27, 2020

Reader Interactions

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Primary Sidebar

Need Help Troubleshooting Your TV?

Get immediate assistance figuring out what's wrong with your TV. ASK A TECHNICIAN NOW via the chat window on this page. You will be connected to a qualified TV specialist to help you.

Need TV Repair Training?

Learn LED/OLED/Smart TV Repair

Learn Plasma TV Repair

Learn LED/LCD Monitor Repair

Learn Electronics Repair

Learn CRT TV Repair

TV Repair Ebook

Now Covers Topics on OLED, LED, LCD and Smart TVs!

LCD/LED TV Repair Ebook

Featured Articles

  • LG Smart TV Wifi Won’t Turn On Automatically? Call LG and They Might Fix it for You!LG Smart TV Wifi Won’t Turn On Automatically? Call LG and They Might Fix it for You!
    If you’re LG Smart TV is exhibiting problems with its Wi-fi connection, specifically symptoms where the wifi connection is disconnecting …
  • Hulu app not working and crashing in your Samsung Smart TV?Hulu app not working and crashing in your Samsung Smart TV?
    Having issues with the Hulu app in your Samsung Smart TV? Wondering about the “smartness” of your Samsung? You are …
  • Smart TV security and privacy issues – What’s all the fuss about?Smart TV security and privacy issues – What’s all the fuss about?
    Like all things that are connected to the Internet, your shiny, high-tech flat screen is also subject to possible security …
  • Add-on Warranty for your Flat Screen TV Purchase: A Good Idea?Add-on Warranty for your Flat Screen TV Purchase: A Good Idea?
    I have never been a fan of buying extended or add-on warranties. We see them being offered almost everywhere you …
  • How to Repair: LCD Panels and T-Con Boards for LCD/LED/Smart TVsHow to Repair: LCD Panels and T-Con Boards for LCD/LED/Smart TVs
    If you are looking for a comprehensive resource on how to troubleshoot, fix/repair very common technical problems seen in many …

Footer

About FlatScreenTech

FlatScreenTech aims to provide flat screen display tech-related information and to help TV owners fix problems with their LCD, LED, OLED, QLED televisions. Topics discussing old school display technologies like projection/DLP and CRT are also featured every now and then, along with other related topics that are of interest to the TV-loving community.

If you would like to contribute or write an informative article for us, contact me!

More Featured

TV Wall Mount Fail Videos We Can All Learn From

If you have a brand new TV and wish to mount it to a wall and are currently … [Read More...] about TV Wall Mount Fail Videos We Can All Learn From

Buying Pop-Up TV Lift Cabinets Instead of TV Wall Brackets/Mounts?

In a previous article, we posed the question on the possibility of TV wall mount … [Read More...] about Buying Pop-Up TV Lift Cabinets Instead of TV Wall Brackets/Mounts?

Please follow & like us :)

RSS
Follow by Email
Facebook
fb-share-icon
Twitter
Post on X

Get Updates via Email

Get new posts by email

About | Contact | Terms of Use | Privacy Policy | Sitemap
All Rights Reserved © 2009 - 2024 · FlatScreenTech.com

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Cookie settingsACCEPT
Privacy & Cookies Policy

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience.
Necessary
Always Enabled
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Non-necessary
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
SAVE & ACCEPT