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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Hi.i have a samsung 55hu9000
My tv has a 3-4 cm blue line in right side of screen.in some menus like YouTube ro Netflix starting dosent show blue line.is that problem from tcon board?
Thanks for your help
Please, I have rite Tek HD smart TV 32 ins.showing two tiny horizontal lines below center screen and now one tiny vertical line at center of screen, what’s the solution?
Hisense tv screen split in half with white and coloured lines in middle..what could be wrong?
I have a 55 LED HISENSE TV FULL HD. The problem i have was originally caused from having it wall mounted i think, where i got a full screen of blue vertical bars. After taking it down and went to throw it out i tested it again just for the sake of it and it works perfectly but when i turn it off and on the blue bars return and have to wait a good couple of hours before its good to go again what could be the problem
I have a 42″ Insignia that does this randomly. It’s the bottom 3/4 of the display the top 1/4 shows what I was currently watching perfectly. Its vertical lines black and white color. Seems to do it and then freeze like that until it’s turned off and back on then it will display fine. So far it took turning it off and back on twice until it finally corrected itself. Is it a sign she’s going? Or is it something that can be repaired fairly simply?
Thanks for the info and help.
I have a 55 inch Vivio Flat Screen Smart Tv. I recently observed a distorted horizontal line that runs through the screen. How can I fix this?
I have a 65 inches Samsung curved smart tv. I experienced three days ago a black vertical 1/2″ line on the left of the screen. After I saw the black vertical line I Google to find out what is the caused and how to fix it. I followed what was explained on your website, I noticed the vertical black line stay appears on the screen no matters I changed hdmi it still appears. Even when I have the tv on Manu it still there I don’t know what else to do. I wish I could attached the picture of my tv screen in here so you can see what I’m experience on my tv. Please I need your assistance, thank you.