We have a Samsung HDTV 55″ inch LCD TV which is showing lines (vertically) and getting extremely hot. At times it powers on at only half of the brightness for a 20 seconds or so and then goes completely black like it is turned off. I do not know what I should be looking for or how to diagnose these TV problems. Do you think that replacing the power boards would be a good place to start? Maybe I need to open up the TV and start to check to see if the capacitors are okay? Where do I even get these TV repair replacement parts? Please help.
The issue could be related to a bad capacitor or capacitors. Maybe 10 years ago there was a Chinese capacitor supplier company selling faulty and low quality caps. Your TV may have these.
THINGS TO TRY TO FIX YOUR TV FAST:
- Try to connect all connectors including HDMI, coax, etc, to be sure all inputs are producing same issue.
- Push the HDMI connector firmly into the back of the set.
- Be sure your actual cable is not bad and causing the issue.
First: Open up the TV case (unplugged of course) and look for a bulging or leaking capacitor. If you see any that are leaking or fat and bulging, replace them. If you find no bad caps, you could replace the complete circuit board but that may be more than the TV is worth. Some of these issues are common on Samsung, Sony, Vizio, and Toshiba. Here are some places to buy caps and circuit boards for replacement HDTV parts.
2 Types of lines on a broken LCD TV screen
Possible Components That Could Be Bad:
Bad T-Con Main Control Board can cause vertical lines or half of the screen is black. Horizontal lines usually indicates a defective screen not a bad t-con board.
Bad Power Supply (Bad Capacitors, Blown Fuse, Bad rectifier) This means that the TV won’t turn on or shuts off randomly.
TV repair – Vertical lines on flat panel TV
- You have to find out, are the lines vertical or horizontal?
- Are the lines a certain color or black and white?
- What section of the TV, do the lines show up in?
- The top half?
- The lower half?
- The right side?
- Or the left side
- Is your screen discolored?
- Do the lines always appear on the screen when using different inputs?
- If you switch from HDMI-1 input to HDMI-2 input, are the lines still there?
- Do the lines on the screen show up over the menu or behind the menu?
- Do the lines always appear on the screen or are they intermittent?
HOW TO FIX LED TV VERTICAL LINES ON SCREEN
Do you have experience in fixing these types of TV issues? Please leave a comment below.
Written by Keith Schneerer
Certified Appliance Tech · Founder, RemoveAndReplace.com
Keith has spent 30+ years repairing machines, starting as a military mechanic and later maintaining food processing equipment before moving into appliance repair. He founded RemoveAndReplace.com to share field-tested repair advice.
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I got a DMTECH LT26XT LCD TV which ran smoothly without any problems, but when i got home after work it had weird colored horizontal lines all the way across the screen, i tried to restart it a couple of time, but with no luck. This is constant and the colors change slowly, anything you could recommend here? :) Great service!
Harish,
If your Samsung TV 46D5500 LED is getting both vertical lines and horizontal lines, that usually indicates a bad or cracked screen. Can you inspect the screen for damage or any part of the screen that is pushed inward?
If the screen is not damaged or cracked, you may have some loose ribbon connectors in the TV or possibly a bad board or 2 which is causing both vert and horizontal lines to appear on the screen.
-RR
I have a Samsung 46D5500 LED TV more than 4 yrs old. The last 10-15 days it is starting with horizontal lines on screen which goes after 5-10 minutes. I was struggling with it. Now I am getting in between running TV horizontal lines some times. Can you please look into it.
Cresswell,
Check the cables going to your TV to be sure it is not a cable causing the horizontal white lines on your LG TV.
Try doing a PICTURE TEST in the menu of your LG TV to see if it simply needs to be reset.
LG TV Picture Test here.
-RR
Cynthia,
First check the input cables to be sure they are not damaged and causing the vertical lines on your Sony TV.
Vertical lines usually appear if the screen has been damaged OR a circuit board ribbon cable may be loose OR a board is bad in the TV and needs replaced.
-RR
I have a Sony Bravia Ex41 Edge LED. The screen has 3 vertical thin lines. The color looks purple. What may cause it? I have the TV for almost 5 yrs. I place it on a TV cabinet. I never thought the screen could turn up like that because I have been using the TV diligently.
I have a LG TV model No: 32LH35FR manufactured Jan 2010, when the TV switched on a white uninterrupted horizontal line runs form one end to the other end at the top of screen. Please let me know what is the problem and how much will it cause to repair it.