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 2010 Vizio 55 Razor LED 1080psi smart tv which has worked perfectly until yesterday. Suddenly the color in the picture became distorted. Normally the start up background is black; however now it is deep red/maroon with horizontal ines. Any image that should be black or dark is now deep red/maroon, and there are color arrays in faces. I tried adjusting the color and reset to factory. What do you think the problem may be and how can I fix. Thank you
Denis,
Check to be sure there are no popped caps on any of the circuit boards in your LG TV. Also check for any loose or burnt board and ribbon cables in the TV. Vertical lines on a TV usually indicate an issue with the screen and not an internal part, however, a board or loose component could be causing it. Has the TV ever been struck or hit? No visible damage to the screen?
-RR
I have an LG 55″ LCD TV and since last night have a solid black 4″ band going vertically on the right hand side.
I tried everything in the settings to see about resetting the picture, however nothing helps.
I have taken the back panel off and exposed the whole back of the TV.
Any tips on what I can do from here to get rid of this problem without scrapping my TV?
Hello-I have a Samsung Model UN55B7100
When the screen is black there are red vertical lines on the left side of the screen and green vertical lines in the middle. When there is a picture (actually watching TV) it can change a bit-always vertical lines but colors and placement can change and they often take up the whole screen or make the screen look “foggy”. Any help is greatly appreciated.
Thanks for the advice!
Kelvin,
Try opening up the TV safely and check all connections. If you find something loose, damaged, or burnt, replace or tighten. Check and recheck all ribbon cable connections. The t-con can cause vertical lines if it is bad. You can test the components with a meter if you understand how. If you have no luck the issue is most likely the screen.
-RR
My TV is nearly 3 years old. Have not moved it or laid it down since I bought it, excluding the minor rotating I do on a daily basis. The problem started a few months ago.
The lines come and go. Usually there will be 3-4 lines when I turn it on. Over time, a few of the line may disappear, or reappear. If I am lucky, there may be NO lines but that usually does not last more than an hour.
I heard that vertical lines may be due to poor connection on the t-con board. Do you think I should open up the TV and reconnect some of the ribbon connectors?
If is a screen problem as you suspect, I guess I am out of luck. Although I am not sure how that happened since I have not dropped it or even moved it significantly.