Could someone help diagnosing samsung Tv model no.UN46D6420UFXZA with flicking picture issue and lines across TV
I have samsung Tv model no.UN46D6420UFXZA with picture . It has horizontal lines all across the Tv and double picture flicking. Could somebody advise what is causing these line and what parts could solve the problem.
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Samsunghttps://www.samsung.com > ... > TV & AV
Apr 13, 2023 - Troubleshooting. 1 Check whether the lines on the screen are moving or permanent. 2 If the lines sway, check the input source (HDMI 1, Video, ...
possible power supply issue know on LG and samsung models would require tech to open the power supply and look for defective Capacitors I have another solution on this issue for a samsung tv. the failing capacitors will show black on the caps and be swollen, they should be replaced with same or higher voltage ones. ensure this work is done by a competent engineer as electic shock is a danger with this task.
Every manufacturer designs the circuit boards in a different way. Unless you have the same make and model as the one in the video, that trick would probably not work.
This is 1 of 2 problems.
1; Convergence(depending on the model of the TV, the convergence ic's will have cold solder joints)
2: vertical ic issues.
If they are different colored lines & the picture also bends, it's
a convergence problem. Else suspect a vertical problem. In the case of
vertical issues, most of the time it's a defective capacitor (or cold
solder joints.).
If it's the 3-crt kind of big screen, it's possible for one of the tubes to be going bad.
It would be best to contact a pro to take a look on your TV and replace the defective components. This should not cost you too much.
Time for a new TV... Unless your really really really attached to that TV your going to spend more money on it then its worth to try and troubleshoot and repair it. Most of the TV's that come across my bench for repair that have developed lines and color splotches go into the recycling dumpster, they just aren't worth the time to repair as it usually comes down to a bad board or components that just can't be obtained to repair it. What most people don't realize is that once a tv is a couple years old there just isn't service parts for them anymore. The manufacturer keeps parts available until the warranty period is up on a model then its done for.
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