Kogan KALED463D1A - horizontal lines on screen

[NickFi]

My parents' 46 inch Kogan LCD started showing horizontal lines on screen. They show up in all modes (TV, HDMI input, AV Input), with or without signal applied.

Depending on the image white content, the lines are more or less visible but I could not improve the image by adjusting the brightness or contrast. I also did a factory reset of the tv, but that did not fix the problem.

I opened the TV and did a visual inspection (everything looks good). I also measured the electrolytic capacitors from power supply using a ESR meter and they seem to be in excellent condition (the TV is just over 4 years old). The display is Samsung LTA460HQ12 and the T-Con board is model Samsung SD120PBMB4C6LV0.0.

Based on what I read on forums, I would suspect either a bad contact on the ribbon cables of the T-Con board, or the T-Con board itself or the LCD panel. I am concerned that some people said that most of the time horizontal lines are caused by the panel and not T-Con board. When I get there, I'll open it again and clean the ribbon contacts. I'm am not sure if it's worth ordering the T-Con board.

Maybe some people may recognize the nature of the fault from the photos I provided and offer some advice.

Thanks,
Nick

[attainteddragon]

Re: Kogan KALED463D1A - horizontal lines on screen

disconnect one side of the t-con at a time power the set up and see if the half that is connected shows a good picture or not, then do the other half.

[NickFi]

Re: Kogan KALED463D1A - horizontal lines on screen

disconnect one side of the t-con at a time power the set up and see if the half that is connected shows a good picture or not, then do the other half.

Thanks for the idea, I will try it and report back.

[tw2005]

Re: Kogan KALED463D1A - horizontal lines on screen

4 years, you've done well. I'm going to suggest panel





https://www.badcaps.net/forum/showth...ighlight=kogan