Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
OK I’ll try that
JJAAMM
Member
Last Activity: 08-05-2023, 04:59 PM
Joined: 07-05-2023
Location: NY
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
There has to be something I'm missing here. It's driving me nuts....Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
Yeah- that's what I thought. None of them are shorted. Though two of them have no continuity to ground....Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
No capacitor on both boards has continuity from lead to lead. However, these all have continuity between their leads (pictured, circled in red). Are these caps?
Also, there are two caps that have no continuity to ground on either lead....Last edited by JJAAMM; 07-30-2023, 10:10 AM.Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
Got it.Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
None of them are heating up on my thermal camera. What's the best way to test?...Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
So I removed the 3 TVS diodes on the two buffer boards. Problem still exists. I also see no hotspots on my thermal camera. This was after changing out both main board and power board. I’m about to give up. What else can this be?Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
Well I replaced both the main and power boards and the issue persists. None of the diodes on the buffer panels are getting hot or looked scorched so I’m at a loss. On other models I see some people say you can just remove them, is that true?Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
Here is another question: there are actually two boards, left and right. Each board gets one ribbon from the main board. Would the issue not have to be up stream of the LED boards since the problem is displaying across the entire screen?...Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
I have an infrared camera. Nothing on the board gets hot. When testing these with a multimeter, what pin to what pin am I testing?...Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
Looks like none of them are labeled with a D.
I appreciate you taking the time to respond. My wife is starting to lose patience with me as every free moment I’m scouting the internet trying to get more info to troubleshoot this. It’s frustrating that the TV worked fine. It was unplugged and left in place undisturbed and this somehow happened while inert. Also, after reading similar threads am I unique in that I get perfect picture on cold startup? Also I don’t seem...Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
Hmm here is a video of my board. Am I missing something?
[url]https://youtu.be/sXZxI84Gem8[/url]Re: SAMSUNG UN55KS9000F picture fade...xI84Gem8[/url]Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
I opened up the bottom of the panel to reveal the led diode buffer board and I don't see any obvious damage. I ran my IR camera and don't see any hot spots.
On the left and right side of the board I see these- how can I test them?...Leave a comment:
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Re: SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seco
I just bought a new main board. I assume that was a waste of money? I might be able to cancel.Leave a comment:
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SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seconds
This was my main TV for the last 6 years. I'm not inclined to throw out a $2600 TV so quickly so I'm trying to investigate the issue. [B][/B]
[B]Problem[/B]
TV was disconnected from power for 6 months during construction. When I plugged it yesterday picture was fine, after 30 seconds it dimmed then started developing horizontal lines, picture then starts to ghost vertically until it degrades into vertical streaks. TV always displays a perfect picture when cold. I can unplug TV for 5 minutes and plug it back in and picture is restored for 20 seconds. I can also keep it in... -
Re: New Members - please post your introductions here
Hello- been searching high and low for insight into an issue I’m having with my TV and I found this forum. I enjoy fixing things that are broken and I don’t give up easily. I have enjoyed reading what I have come across already and I hope to now contribute in discussion.Leave a comment:
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