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Have a samsung un55fh6200fxza 55 inch led TV that I've replaced the power supply board led interface strip and all leds and still no light. Screen shows image but I can only see it with a flashlight pointed directly at the screen. What else can be the problem?
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@dannyh41496 since you already replaced all the LCD backlight strip (I assume that is what you meant by led interface strip and all leds) as well as the power board, it stands to reason that your TV does not get a backlight on signal from the main board. Turn your TV off. Disconnect the power cord from the power board. Disconnect the main board from the power board. Now plug your power cord back into your power board. Your backlights should now turn on. No, you will not have a picture etc and only your LED lights should be on. You can see those through the multiple holes in the sheet metal on the back of the LCD panel.
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@oldturkey03 yes I have already tried this and I still get no power to the LED's. When I try testing each strip individually with power off and using a drill battery to provide power to each strip, I am only able to light up the strips that are on the right hand side of the TV (the strips that attach to the main strips that run from the vertical LED interface strip). With power on running from power board I am able to light bottom 4 rows when completing circuit from positive side of strip and touching TV metal frame. Top 3 rows do not light. There is obviously current running to the interface but not the top 3 rows.
@dannyh41496 this "Top 3 rows do not light. There is obviously current running to the interface but not the top 3 rows." really looks like you are still have issues with your backlight strips. I would not change any of the board etc, but focused on the backlight strips. Either replace those that do not come on, Test the strips individually as wella s teh connections.
@oldturkey03 thank you. I tested all the LED strips individually and they all come on when off of the TV connection. Only when I connect them to the TV do they not come on.
@dannyh41496 can you disconnect them from the power supply and then power the whole array up, not just the individual strips?
@oldturkey03 I disconnected the connection from the power board to the LEDs while they are still mounted to the TV chassis. In this setup the array doesn't turn on but I am able to power each strip individually. I think I should note that each LED row is attached to another strip that is called an LED interface that is connected to the power supply board via a tconnector.
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Has anyone else seen this issue?
por DannyH