Wall LED Light Brightness Reduction

[Badazdz]

Hello, I have this motion activated LED which fits into wall.
According to the seller it should be 2W but it is too bright for my use case and I would like to reduce the brightness.
I have noticed the missing resistor in R6 place which also says 1W and R7 below says 0.5W and has 22ohm resistor fitted.

Is it possible that the missing R6 is there for power selection for multiple models and thus could be used to reduce brightness? I need to reduce it about 50%.

 

[Alizayy]

To reduce the brightness of your wall LED light, you can install a compatible LED-rated dimmer switch, use a neutral density (ND) filter film inside the cover, or replace the bulb with one of a lower lumen rating.

 

[Badazdz]

The input is AC 85-265V and the board feeds also a PIR sensor so I don't know where to put the dimmer.
The ND filter seems to be rather expensive.
My thought would be the cheapest and easiest solution and my bet was to add or replace some resistor to make it dimmer.

 

[bertus]

Hello,

What is the type number on the chip (U1)?

Bertus

 

[Badazdz]

It is something like O1LBr2 or Q1LBr2 or O1LB/2 or the B could also be 8.
I really dont know and it is hard to read.

 

[AnalogKid]

The light is powered by a non-isolated, universal input switching power supply. Its job is to maintain a constant current through the LEDs regardless of variations in line voltage, component aging, etc. There are several different circuit topologies that can do this.

For one of them - If you can find the correct resistor (a current-sense shunt), increasing its value will lower the current to the LEDs. This will be difficult without a complete schematic.

ak

 

[Badazdz]

I have replaced the 22ohm R7 by 150ohm resistor and achieved desired brightness.
Thanks all for help.