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 panasonic Viera that was given to by a friend. He d tell me there was a thick black line down the the middle and the tv gets extremely hot.. I have ad the tv a week now and there is no black line appeared at all. But there are two sharp lines virtually on the left hand side..of the screen..One looks green and the other one black and green depending on the picture showing.
I havent looked to see if it is the capacitors as i havent hed the time… could anyone shed any light on my problem thaks
I have an 80″ flat screen VIZIO TV.
I inherited it from a friend who passed away a few years ago.
I never wrote the model number down.
Anyway, one day as I was watching TV, a thin black horizontal line started coming from the lower left hand side of the TV.
It started spreading toward the lower left side and got thinner then disappeared before it go to the lower left edge.
Later, wider ghost like lines appeared above it horizontally.
I turned the TV off thinking it was just hot, because I had been leaving it on longer.
When I turned it back on about 2 hours later, I saw the same lines.
Having no idea how old the TV is, I figured I would watch it until it went completely out.
Well, it went completely black after about an hour.
I looked up how much another TV like it would cost, and I don’t have $3999.99+ to shell out.
What could be the problem?
Also when I first turn tv on, half the screen shows the vizio icon but then screen changes to what I described above. Can I send you a picture?
Vizio smart tv think it’s 42″ or 43″ left half is grey, whitish strip about 10″ wide down middle and right side is darker and can see faint movements, make out some closed caption. No idea what it could be, please help me!
I have a 55 inch Sony Bravia around 6 years old.
There has been a line appear straight down the centre of the screen like a split screen and one side is darker in shade of colour than the other but picture still watchable just little annoying.
There are also faint thick lines that appear below what ever object is currently on the screen.
Before this happened every now and then the picture would disappear for a couple of seconds and some vertical lines different colours would show but then the picture would go back to normal.
The screen is in good shape, and no cracks.
Just the bottom part has discolored black bar about 10 inch high across and lower right side has ghosting picture.
I can still see picture btw, despite this bar, if that helps.
Niko,
Sounds like screen damage or a possible board issue.
Is the screen cracked?
-RR