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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Kevin,
The screen is most likely damaged.
There may be a left over substance from the liquid that came in contact with the screen once it dried.
You could try taking the TV apart and remove any dry residue.
At that time check the screen in all areas and the inside of the TV for any damage to circuit boards, etc…
-RR
The bar has not disappeared yet. It has dried but nothing has changed. If i have to replace a part which one should i start with?
Kevin,
Yes it may be possible it needs to completely dry out, but it needs to be turned OFF ASAP.
If the TV was sprayed with water, and the TV has been left ON, the screen is most likely bad.
If your TV screen gets wet, it is best to TURN IT OFF ASAP and let it sit for a few days to dry out.
If the TV is still turned ON after it got sprayed with water, it will short out a component, circuit board, screen, wiring, etc…
-RR
Same thing happened to my TV. My 3 year old sprayed my TV and then shortly after a 5 inch vertical line appeared just left of center (if your looking at the TV). I have a 47lm6700. Is there any hope that this will fix itself by drying?
Gen,
Yes if the pink horizontal line just appeared on its own, then the screen has become faulty.
You could try finding the same TV for sale for parts and use that screen to fix yours.
-RR
I have a Sony Bravia KDL 40EX520 40inch LED TV that i bought in 2012. Randomly the other night while we were watching TV a bright pink 1 inch horizontal strip appeared at the top of the screen. The TV has not been dropped, hit or damaged in any way. Sony tells me the entire Screen needs to be replaced and there is nothing else that can be done. They’ve also informed be that the part costs more than a new TV so i should just throw away the TV and get a new one??? Is this really possible?
I’m just concerned that I buy a tcon board and then that’s not the problem. The screen has no signs of damage.