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LCD TVs - LED

LED TV source does not turn on rsag7.820.5268 / roh

Samuel37
hace 5 años
hace 5 años
The friends of Yoreparo wanted base if they could help me with this source, the V801 was burned and I replaced it and yet it did not go on after measuring it was short on the IC801 and I replaced it by the Tea1507 as explained in other forum voltage I only have in the secondary in the diode vd816 that goes to v902 if someone gives me a hand xfavor thank you in advance
Victor E
Victor E
65.783
hace 5 años

How integrated is the n801?

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Samuel37
hace 5 años

It is a regulator or control of the source unfortunately it could not be read but in the diagram said ncp1251 and I replaced it x the tea1507p nc I know if it is well as I did but it is as I said in the other forums and videos.
Now change the two diodes vd817 and 819 and I got 9 volts in the secondary where I have to have 12 I have 9 to 10 and in the others nothing x that would know if the n801 replace it well xq in the opto I have 9 volts

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Samuel37
hace 5 años

Another thing that I forgot to put when I set up the replacement circuit tea1507 the voltage in theory would have to be 12 I have those 9 or 10 volts

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Victor E
Victor E
65.783
hace 5 años

The only thing I know that the replacement of NCP1251 is 5A2XX.

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Samuel37
hace 5 años

I did the test connecting the main and flashing stanbay light any recommendations? Thank you

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Samuel37
hace 5 años

But friend excuse me the replacement that I put has the same characteristic only that 1k resistance and another 100 ohms zerne diode of 18v is put on and adapts

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Victor E
Victor E
65.783
hace 5 años

I pass the direct replacement they sell everywhere, the tea1507 is similar but not the same.

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Samuel37
hace 5 años

If, unfortunately, where I live there is nothing at all for that, I put that replacement there would be no way that this source would work

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Victor E
Victor E
65.783
hace 5 años

by ML does not get it?

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Samuel37
hace 5 años

I haven't noticed, I could try

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Samuel37
hace 5 años

If I have it connect everything like that with the replacement but less the fb q is connected in the replacement two resistors q and the name is connected to the 1k on the ground and the other one in the opto and joined them and you connect the cable to the replacement would be fb

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Samuel37
hace 5 años

And something else I forget to mention is that the drain of the replacement ba to the mofet

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Victor E
Victor E
65.783
hace 5 años

In any case it would be the pin driver that goes to the mosfet. The opp pin that brings the ncp1251 tea 1507 does not bring it

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wilson sepulveda
hace 5 años

https://www.youtube.com/watch?v=5cJkk3qH7nw, this video can serve as a guide, login to me repro and everyone starts calling no joda

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Samuel37
hace 5 años

Many thanks friends

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seekude
seekude
2.085
hace 5 años
hace 5 años
Those ics are different, place the ncp1251a that at least in my case is easy to get it.
Victor E
Victor E
65.783
hace 5 años

I said it throughout the post. Greetings

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seekude
seekude
2.085
hace 5 años

Yes, I saw it, but the user kept insisting with the replacement :)

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