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 very thick white vertical line on my 32″ LED Samsung TV. I want to know what to do to clear it off
I have two very thin horizontal lines running parallel to each other.
This is a 60″ Samsung LED purchased in 2013.
I have a Samsung 60 inch plasma display flat screen TV model- ps60f5000AMXRD.
On both sides of TV left and right hand sides there are vertical lines going from top to bottom, they are multicoloured lines like the colours of the rainbow.
Approximately 2cm gap between each line.
There is no damage/cracks to the screen at all, and the picture is perfectly visible and clear and colour is absolutely fine.
Can you please help me with how i can fix this PLEASE? or advise me of what part i may need to purchase to rectify this problem.
Toby,
Your 55 inch LG 3D Smart TV may have a cracked screen or a board may be fried.
Can you tell us if the TV screen is actually cracked or is it an internal issue?
-RR
I have a 55 inch LG 3D Smart TV about 5 years old.
I have green and pink lines going horizontally from end to end on top of the screen and it’s snowy.
I don’t have a picture what so ever and even tried the hold power button for 20 seconds unplugged and still nothing.
The lines are wide as a ribbon tape and they going from the place where the ribbon tape is on the bottom of the panel.
They are on right side of the screen after the Samsung logo.
Screen wasn’t damaged the lines appeared on by themselves.
They are multi colored with white background wide as a ribbon tape.
Is it possible to find out if the fault is in board?
Erik,
How wide are the colored vertical lines and on which area of your Samsung Plasma TV do they appear?
Is the screen damaged or cracked?
If the screen is not cracked, you can try replacing one of the boards.
Many times a circuit board will not work because of a popped cap.
Safely check the boards in the plasma TV for any damaged capacitors.
Replace the caps or the complete board to fix the TV.
-RR