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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Michael,
Try resetting the TV to resolve the issue.
If not the screen or a circuit board is most likely bad.
Check the caps on the TV boards to see if they are popped or blown.
-RR
Salia Salifu,
If you have a vertical line on the screen it’s the LCD screen failing. It cannot be fixed and the screen has to be replaced. Most likely you’ll get more lines in the future.
Find a replacement screen online as LCD screens are getting cheaper.
-RR
Gerry Gabriel,
If your TCL TV was hit with a ball, the screen is most likely damaged and needs replaced.
Can you tell us the model number of your TCL TV so we can find you a replacement screen?
-RR
My TCL smart TV has about a 3 inches of black horizontal lines in the right side of its screen. It happened when my daughter hit it with a ball below the edge of the screen. Could you please suggest a DIY before any technician with the cost of its repair.
I have a 24 inches Toshiba LCD monitor and once in a while, a red line vertically is across the screen. At first, I used to press the area nearer to the red line on the screen gently and it disappears! But it’s becoming stubborn.. What’s wrong with it? What do i do?
I have a Sony KDL-46W4000 TV and just recently thin black vertical lines have appeared. They start off thick then reduce down to about 1mm wide on both the far left and right side of the screen. On the right side there is also a red/green line.
There are two lines on each side of the screen.
Any ideas as to what the problem may be?
Is it costly to repair?
The lines are only there when the TV is powered on, at no other time are they visible.
Victor Adorno,
Vertical transparent lines on a TV usually indicates a bad panel. Try tapping on the back and front part of the TV to see if maybe something is loose. When you tap do the lines move or change?
-RR