Philips 55PUS6754/12 Backlight settings override TMP19.6E LA

[alltvrepairs]

Hi,

I would like to reduce the backlights for this set. There is no direct settings like in Samsung or LG etc. Probably in Option Codes in SDM.
If not available I would like to ask if anyone managed to alter the circuit to reduce slightly the LED current. Uses PF7904S U8601




Tks

[alltvrepairs]

Re: Philips 55PUS6754/12 Backlight settings override TMP19.6E LA

No one here ever tried to reduce backlight in modern Philips sets?

[nomoresonys]

Re: Philips 55PUS6754/12 Backlight settings override TMP19.6E LA

here's tomtech doing a few, usually done with a resistor mod: https://www.youtube.com/results?sear...r+modification

[lotas]

Re: Philips 55PUS6754/12 Backlight settings override TMP19.6E LA

No one here ever tried to reduce backlight in modern Philips sets?

These resistors are a current sensor, when one, two, ... are removed, the resistance in this circuit will increase, therefore, the current to the LEDs will decrease.

[alltvrepairs]

Re: Philips 55PUS6754/12 Backlight settings override TMP19.6E LA

here's tomtech doing a few, usually done with a resistor mod: https://www.youtube.com/results?sear...r+modification

Tks. Interesting guy for sure. Nice watching him removing Large screens bare handed without suckers!

[alltvrepairs]

Re: Philips 55PUS6754/12 Backlight settings override TMP19.6E LA

These resistors are a current sensor, when one, two, ... are removed, the resistance in this circuit will increase, therefore, the current to the LEDs will decrease.

Tks, I was after those lines as well but preferred a confirmation first. Have tried with the 100R series resistor range 75R to120R made no difference. However I am sure removing a resistor from the voltage divider you marked should be a quicker option.
Tks again!

[kiko1]

I want to wake up this topic a bit.....
I tried removing resistors from FET-s source, but current did not changed...
tried also double the source resistance from Q8601....still the same current...go figure....
I really need PF7904S datasheet...anyone have it??