set came to shop nothing but standby led lit.one of the two sets of leds not lit using the led tester.found a bad led on two strips.replaced strips and now all leds light.still same symptoms,no leds,no audio,no video using flashlight test.if I unplug the main or tcon leds light.replaced main,power board and tcon.this one has me stumped.any ideas from the pros?
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Re: samsung m#un60ju650df "dog"
You can start by providing good clear pictures of the whole backside of the TV showing all the boards so we can see how they are connected together.
It sounds to me you may still have problem with the LED strips/wiring, cannot tell much more until we get some Voltage readings on the LED connector with LED connected in place.
What is the power supply board P/N/ BN44-?????Last edited by budm; 05-18-2018, 02:01 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Ok.. this is the story:
Have an old Samsung LED 3D TV (UE55F6475). First it started to lose light on the lower 40% of the screen now and then. Like for 10-60 mins and then it would work again. Then a bit later it just got stuck in that position. The lower 40% of the screen is dark, and it gets progressively darker the lower u go so it's obviously that LED strips where not working. I also looked for similar errors online and saw an exact copy and on that one it was faulty LED strips.
This is kinda how it looked, just that mine were at the bottom of the screen:
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