Are the lines a certain color or black and white?.You have to find out, are the lines vertical or horizontal?.TV repair – Vertical lines on flat panel TV Horizontal lines usually indicates a defective screen not a bad t-con board.īad Power Supply (Bad Capacitors, Blown Fuse, Bad rectifier) This means that the TV won’t turn on or shuts off randomly. Here are some places to buy caps and circuit boards for replacement HDTV parts.Ģ Types of lines on a broken LCD TV screenīad T-Con Main Control Board can cause vertical lines or half of the screen is black. Some of these issues are common on Samsung, Sony, Vizio, and Toshiba. If you find no bad caps, you could replace the complete circuit board but that may be more than the TV is worth. If you see any that are leaking or fat and bulging, replace them. Be sure your actual cable is not bad and causing the issue.įirst: Open up the TV case (unplugged of course) and look for a bulging or leaking capacitor.Push the HDMI connector firmly into the back of the set.Try to connect all connectors including HDMI, coax, etc, to be sure all inputs are producing same issue.Maybe 10 years ago there was a Chinese capacitor supplier company selling faulty and low quality caps. The issue could be related to a bad capacitor or capacitors. 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. I do not know what I should be looking for or how to diagnose these TV problems. 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. We have a Samsung HDTV 55″ inch LCD TV which is showing lines (vertically) and getting extremely hot.
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