Got a Samsung UE49MU62220, powersupply = BN44-00807H
The screen is broken, not the problem though.
I want to use the unit for lighting.
Without mainboard, so called "Forced Backlight" functions fine ... only ..it's full on.
I would like to be able to dim the "unit"
Unfortunately i can not find schematics/diagram of how the leds are driven, only some snippets here and there since it seems somewhat same for several designs from Samsung.
BLU_PWM on CNM803 from the mainboard seems to be the signal that does this ..but how ?
0.9 - 3.3V(full) should change the level. Could i just get a voltage from the powersupply and run it through a potentiometer or is it some special frequency requirement ?
There is also vr9051, could i abuse this or is it only to limit max. current ?
The screen is broken, not the problem though.
I want to use the unit for lighting.
Without mainboard, so called "Forced Backlight" functions fine ... only ..it's full on.
I would like to be able to dim the "unit"
Unfortunately i can not find schematics/diagram of how the leds are driven, only some snippets here and there since it seems somewhat same for several designs from Samsung.
BLU_PWM on CNM803 from the mainboard seems to be the signal that does this ..but how ?
0.9 - 3.3V(full) should change the level. Could i just get a voltage from the powersupply and run it through a potentiometer or is it some special frequency requirement ?
There is also vr9051, could i abuse this or is it only to limit max. current ?
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