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 Sony Bravia kdl-52vl150. A couple of months ago it started having a thin red line vertical middle right of screen.
About a weeks ago, when power on there are vertical lines just above and below the Bravia logo. When hitting menu, the screen has different colored lines, can barely read the menu. To the right of the screen, menu is perfect white on black. If you turn on off a few times the screen will appear perfect (no thin red line). A few times the colored lines would disappear after leaving tv on a few minutes. I installed latest firmware, didn’t help. Yesterday, tv started perfect, but all hdmi inputs had perfect picture, but no sound. Component input worked perfect. I took off the back panel and unplugged and plugged sound cable and hdmi sound works again. I turned tv off and this morning, when powering on, the colored vertical lines are back. After turning it off and on about 10 times I got a picture w. sound, but there is a 3″ horizontal band on the upper portion of the screen that is lighter than the rest.
With these symptoms, is it the tcon or something else?
-RR, sorry I should have answered all question.. TV is 2012 model. Yes, the line appears on all input types, you can actual see it with the TV off, if you look for it :)
-RR
No, it doesn’t seem to change color, I can see the back light. I don’t know if something got in contact with the screen. I turned it on one day and that’s what I saw. Funny part is I saw a comment from someone saying go over the light with your finger and that will take care of it. Well it didn’t but I has gotten much narrower. Very odd. Is this a lamination issue?
Shantel,
The issue with your Samsung TV could be caused by a bad inverter, bad ccfl, etc. You may also have bad capacitors on the main board. Check the main board and check the capacitors for bulging.
-RR
Please help!!! I have a Samsung flat screen…. Picture quality is awesome for about 10-15 minutes, then white translucent vertical lines starts showing up. It starts out slow then after about a minute they increase until the whole screen is this translucent white. What can be done to repair this problem please.
Daniel,
Does the vertical line change colors as the TV is on? Nothing has come in contact with the screen? How old is the TV? Does the line appear no matter what INPUT the TV is on?
-RR
I have a Sony KDL-52W5100. It has a vertical line that’s off-center to the left slightly starts at the bottom and goes up only half way vertically. No physical damage is visible. Just about 1/4 inch thick a tapers to a point close to the center of the screen. Any thoughts on what would cause that? Is the panel bad?