Samsung UN49K5300AG, BN44-00868A L55PF_KDY

[WILSON_RD]

Hello.

I need the BN44-00868A L55PF_KDY voltage source diagram.
If anyone has, I would be very grateful if you share with me.
The problem with this circuit is that a very high voltage comes out in the backlight (300 v. The LEDs burn), It should be only 119 v.
I suspect the IC Driver (IC9851) is leaking, but I can't get the datasheet. Its characteristic is '70152' with eight pins.

Hope someone helps me with this. Thanks.

[dick_barton]

Re: Samsung UN49K5300AG, BN44-00868A L55PF_KDY

Normally if the led output voltage is much higher than the rated voltage (given on the power supply) tend to indicate open led(s).

[WILSON_RD]

Re: Samsung UN49K5300AG, BN44-00868A L55PF_KDY

Normally if the led output voltage is much higher than the rated voltage (given on the power supply) tend to indicate open led(s).

Sure enough, dick_barton. I accessed the LEDs and one of the two strips of 31 LEDs each contained 8 burns. These go in series.
My biggest fear is that when energized they will burn again from the high voltage. Considering that I must buy it online and it takes a little more than a month to reach its destination. : o:

[R_J]

Re: Samsung UN49K5300AG, BN44-00868A L55PF_KDY

The voltage will come down when the led's are in circuit

[WILSON_RD]

Re: Samsung UN49K5300AG, BN44-00868A L55PF_KDY

The voltage will come down when the led's are in circuit

Dear R_J,

I will wait for my package with the led strips, I will connect them and then I will comment on the result. Now I feel more secure.

Thanks for your help.

[dick_barton]

Re: Samsung UN49K5300AG, BN44-00868A L55PF_KDY

+1
As R_J has said the voltage will drop down when connected t0 working leds.
Also turn the backlight down as low as possible since this (set to high level) is what tends to kill the leds.

[eduard2]

Re: Samsung UN49K5300AG, BN44-00868A L55PF_KDY

IC Driver (IC9851) is leaking, but I can't get the datasheet. Its characteristic is '70152' with eight pins.

SLC7015R02, no datasheet and no sale