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 Sharp Aquos LC-65xxxx.
All the sudden i got discolored lower half right side to the middle of the screen and 10″ thick lines across the screen horizontally.
I still see a picture but is not clear and i have noticed whenever using a PC at that corner the mice is shadowing.
Lg42lm6690 having flickering horizontal lines last upto two seconds repeatedly irrespective of inputs.how to fix it?
Sony Bravia KDL46HX820 with vertical hazy lines through mainly the left of the image.
It varies in colour and positioning depending on what is being displayed, the lines do not stay in the same place, but when they move the old ones don’t disappear straight away they seem to fade out slowly.
Besides this, most of the image is fine. It does the same thing regardless of which input is used, and even displays in menus and during internet TV streaming. I suspect it may be the t-con board, because the lines move, but the “fade out” thing that almost looks like “temporary burn-in” also makes me suspect the panel might be at fault. I have checked all the capacitors visually and there are no buldging or burst caps. I have reseated all of the connectors between the t-con and the panel, and the t-con and the main board. The lines are still there. What do you think? Should I shell out for a replacement t-con board and try it out? Any help would be greatly appreciated.
Sony Bravia KDL46HX820 has hazy vertical lines over most of the left hand side of the image. The colour and positioning varies slightly depending on what is on the screen. It displays on any input, even in the menus and internet tv. Most of the right hand side seems unaffected. When there is a drastic picture change (ie: exiting the menu), the lines introduced by the previous image stay for a while and slowly fade out. Some text from menus is almost still visible after exiting the menu, pixelated vertical haze, which fades out after a while. I have checked capacitors, reseated all connectors between the t-con board and the panel, and between the t-con board and the main board. It recently moved house, however had been working fine for a few months. Just in case, I have checked the panel from the front carefully with a bright torch, there does not appear to be any physical damage to the panel – although it is difficult to see it perfectly through the gorilla glass. I am suspecting it may be a faulty t-con board, but the “temporary burn-in” effect sometimes makes me think it might be a faulty panel?? What do you think??
New ASANO brand 42″ plasma screen was strike by power surge and has white (rainbow color) vertical line all over the screen…can not view the pictures because of vertical line all over.
I have a Sharp LC-46D64U LCD TV that has four vertical yellow lines when the tv turns on. It appears over the menu on the TV and appears on every input. Once the unit has been on for about 10 minutes these lines all go away and the screen looks great. I opened up the back of the TV and found that no capacitors are bulging or leaking. The four yellow lines only appear on the right side of the screen. I can add that when the TV has been on for about 5 minutes, pressing the screen in the middle of those lines makes them go away but when you reduce pressure, the lines come back. Anyone have an idea? Bad panel? Bad Inverter board?
my Daughter sprayed febreze on my Hitachi 42″ TV. Now it has white green pink and black lines. It turns on, but shuts off shortly after. What part would i need to replace to fix this?