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.
More about Keith →
Hi I was playing my ps4 play station on my flat screen TV next thing I know it was showing lines going across the top of the TV
I have a Toshiba Regza. About 3/4 of the right side is a little more grey than the left as if someone had dimmed the brightness just a bit. There is a slight thin line that separates the left and right. The line is not straight up and down but appears to be back and forth from top to bottom. What do you think?
Chastity,
Try putting the TV input on to another media device to be sure it is not the TV causing the horizontal line. You could also have a faulty HDMI cable or other causing the issue. Is the screen cracked that you can see?
-RR
Dale,
Have you tried switching inputs to be sure it is not the TV?
-RR
James,
May be a screen issue if the t-con did not fix the issue. Have you examined the screen to be sure it is not damaged in the left area? Do the lines only show on the left side of the TV never on the right side? When you had the TV opened to replace the t-con board, did you examine all other boards and connections to be sure everything is secure and no caps were popped or damaged?
-RR
Scotty,
Have you checked to be sure the screen is not cracked? If you have vertical lines it may be a bad t-con board. Further troubleshooting is needed.
-RR
My TV Samsung UE46D8000 for the last month it been getting blue vertical line all over the screen… Is it worth repair or new tv?