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 have a 70″ Sharp smart tv and the top screen is cracked I still can watch tv but now horizontal lines are there, can I fix that?
Javan Lee,
Are you able to get into the color and brightness settings?
If so change it by doing a FACTORY RESET.
-RR
I have a 70 in. Vizio smart TV. And the picture is white and bright all of a sudden. It still plays the pic but its bright and white.
I have a Samsung SmartTV ES8000. 10 days appeared colored vertical lines across the screen, but only with decoder sky hdmi port have changed but it is the same, instead of the normal TV that is not from an external device does not have changed Cable HDMI but it’s the same, I noticed after opening the heat signs both on the coating on the cards with the t-apparently I have not damaged the new paste put under the sink, and given a big clean printed circuit boards with isopropyl solvent.
Noe Buddy,
You will have to find a replacement screen for your Vizio 32 inch.
Here is a company that sells replacement screens for Vizio.
Look on eBay or Alibaba.
Possibly look on Craigslist for another TV that you could Buy and make one good one.
-RR
I have a 32 inch Vizio m series smart TV and I have a pink line going down the middle of its screen my warranty has expired by a month and Vizio won’t replace it. So how can I fix this? Can someone please help?
I have a 40″ LCD Toshiba that just today started having thin black lines going horizontally across the screen, everywhere except for the top 1″ of the screen. I unplugged everything and noticed that the screen was still doing it. I tried going to menu and it was still there overtop of the menu screen. What do you think might be the cause of these lines?