tvsamsung source (bn44-00666e) always melts the same led.
Ok check if they are 6 volt led, I am not sure because you do not put the TV model but usually Samsung puts 3 volt 1 watt led. If you can mount the complete led strips it will be much better. regards
Well friend, I told you ... you were right the LEDs were not 6 v .. the wrong probes .. and they were 3v samsung .. I had in stock and I just changed them all .. but when I tried them I had to melt the same ... the last led of the strip that goes to D1 and D2 .. with spark included ... the tv is samsung UN40FH5303GCDF .. greetings.
Maybe you are making a bad connection, are you assembling the complete strips? Are you mounting strips the same as the model in question? If this is not the case and you are assembling other strips, you can do it but only consider the first positive and the last negative of the power cable of the LEDs. You put the positive in the positive input of the first strip and the negative in the negative of the last strip, then the connections are between the missing points connecting negative with positive. Also notice many of these strips have an aluminum heatsink, so it doesn't stick with any positive connection.
This model of strips has aluminum underneath and a thin layer of copper on top, it is possible that when replacing the LEDs the positive or negative line of the LED has been pasted at some point with the aluminum, you must check point by point in continuity scale With aluminum, with the connector removed, you cannot continue with the positive or negative aluminum. The LEDs are breaking for this and not for excess current or voltage. If you changed all verify this that is the problem. regards
Well Franki, you were absolutely right trying and testing I found a LED with the negative in continuity with the student ... by separating it and testing it without touching, it worked well ... now to see how I accommodate, thank you very much for your help, I think that the age takes a toll on me, it gives me even shame .. the first thing I don't realize that when I tested the LEDs ... the power supply I have in the laboratory was broken .. and I felt bad about the voltages and then not having been able to find out the fault, but anyway .. all right, I hope my mistakes serve some younger friend greetings.
I'm glad you solved the problem, those things happen to anyone regardless of age, vision or knowledge, it has happened to me that small details I do not see them, the important thing is that he could solve and here we are always here to help. Greetings and luck
68660406_737511136677771_5279257548363399168_n.jpg [80.36kb] 68913302_483763932458414_4741093176897437696_n.jpg [118.64kb] 69017623_509816009795829_2699557082075496448_n.jpg [86.98kb] 69644384_634161870320837_1888931964015083520_n.jpg [82.99kb] ..... as it is in the files you must place a 12 ohm x 3 watt resistor on the return line and it will not fail