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LCD TVs - LED

Lower backlight voltage tv 32 "NST

willyboy1420
willyboy1420
1.072
hace 5 años
hace 5 años
Hello friends ... I need help ... bring 3 resistors of R300 on pin 3 of the D4454, already remove 2 and the voltage remains the same ... work with 21 led of 3V, and is in 67V .... bring the SN510P can help me lower that voltage ... TP.VST59.PB818 ... thanks
willyboy1420
willyboy1420
1.072
hace 5 años

Pin 10 dim I have 3.12V

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willyboy1420
willyboy1420
1.072
hace 5 años

Pin7 FB brings an R of 100ohm, but it is micro smd ... I can vary it

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willyboy1420
willyboy1420
1.072
hace 5 años

But it brings 3 R of 2d 1R60 and 1d 2R2 ... which measures me 0.5 ohm all together ... I should raise or lower these resistors to lower the voltage

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oswaldo lizarraga
hace 5 años

Good afternoon, television brand Nisato 32, the modifications must be made in the power Tr that feels the ic driver of LEDs, usually it is to raise the value of a few resistances that are grounded in the indicated place and measure the voltage of the output (s), so the voltage drops 5 - 7% of the value.

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willyboy1420
willyboy1420
1.072
hace 5 años

Thanks osvaldo .... but I already solved with just slightly increasing the resistance of the F5 pin of the SN510P .... send to give you a solution for your interest ... thanks

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oswaldo lizarraga
hace 5 años

Hello Willy congratulations on your repair, we will close this post commenting on the repair, with the modification made to the integrated SN510p on the FB pin.

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oswaldo lizarraga
hace 5 años
hace 5 años
Good morning, modify resistance, raise 1 - 2 ohms, pin of the FB in the integrated SN510p, thus reducing the voltage for the led strip.
willyboy1420
willyboy1420
1.072
hace 5 años

Just change the 1R50 to a 2R20 and the voltage under 4V.

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oswaldo lizarraga
hace 5 años

Exact, resistor from 1.5 ohm to 2.2 ohm.

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