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LCD TVs - LED
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I request samsung lcd tv diagram
70
hace 5 años
hace 5 años
70
hace 5 años
In the afternoon, I tried it and in one of those that the relay was playing, the TV looked perfect after 10 minutes, they saw the ledge part of the screen LED strips flashing after it was taken off by itself and continued to be well when it took one hour in turn I turned it off and did not want to show more the LEDs flash and I'm going to have to look for new 3-volt LED strips and test by sectors to see.
70
hace 5 años
Friend billy58 I was looking for that resistance and gave me work to find it is smd because I looked at a repair of Jose Hernandez of 3 years and it was the same resistance that you told me rs108 of 10 ohms I was undervalued average 24 ohms. Thanks for your great contribution.
81
hace 5 años
hace 5 años
In my experience the LEDs fail and the tester is not reliable in terms of amperage or serious consumption that you try with other LED strips or also with a source in which city I in Bogota
81
hace 5 años
I technologist from Bogota in my experience what they fail are the LED strips. Try other LED strips is my advice
81
hace 5 años
I send you a link to download https://www.electronica-pt.com/esquema/lcd/bn44-00622d-samsung-psu-35978/
81
hace 5 años
that source if you disconnect the main and connect only the LED strips she must turn on alone is the test mode. When you do that you must measure voltages or voltages to confirm that everything is fine
70
hace 5 años
When I disconnect the main, the LED strips flash for the avajo more than the arriva, this source travaja in 4 phases of strips according to what I have measured three faces with 81vol and one with 40 because it is a single strip the other phases are 2 strips in series.
81
hace 5 años
Well since you know the voltage you can feed the LED strips with an external source and test its consumption in amps to say something
70
hace 5 años
E tested strip by led strip and all consume the same amperage the variable mine source reaches up to 30 vol nothing more
but with that they understand not how they have to teach and the consumption is the same in all the 0.2 milliampere strips the only thing I had when I checked the prinsipium was a led that lit half dark and replaced it was perfect lighting and just like all that tv It went off well at night and when taught it the next day and began to protect itself.
81
hace 5 años
I apologize for my insistence, this week of a 40-inch samsung led I feel the same change a led of a strip and I stay as you say, luckily I had another TV the same and I put the source to the other TV and normal function and testing the LED strips lit me normally but when the source changed the fault persisted. conclusion change two strips of the three that has the tv and it is normal
70
hace 5 años
This 40-inch TV has strips tied one of 7 and one of 5 in series and they are 7tirillas 3 couples work in series and a single travaja
81
hace 5 años
looking at the photos this happens to my mind look between the strips UNIONS in the multimeter there must be 0 ohms if there is resistance you will have that effect of flashes
1.242
hace 5 años
hace 5 años
friend you talk about relay this source doesn't use relay
70
hace 5 años
This source when it starts a relay sounds I am going to take a picture so they can see and understand
1.242
hace 5 años
friend analyzing the diagram check the pc815 otoacopter that sends vdc to the relay this source can work without the mainboar
1.242
hace 5 años
good friend how good you solved I had a problem like that and I didn't remember it until you referred to the resistance rs802 I remembered the fault I had for 1 month
70
hace 5 años
hace 5 años
Fat friends to follow me on this issue for those who have to deal with this defect a bit confusing according to the symptoms was the resistor rs802 of 10 ohms that feeds the ic of the pfc. Greetings to all.
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