Hello, I do not know if you will be the world-wide maxielectronics but for the doubts I answer what I told you there: Apparently it has 4 individual returns, which are switched through 4 mosfets (Q5, Q6, Q7 and Q8). You have to increase the resistance between source and gnd of these transistors, it can be seen that there are jumpers (j1, j3, j7 and j9) and several resistors in parallel. Start by removing the welding of the jumpers mentioned, which remain open, and if it is low, it should go down but sometimes it is not enough, then you start to remove the resistances start at one and measure in each section, notice that they are 4, Count the LEDs on the strip, divide by 4, and multiply by the voltage of the LEDS so you know what voltage is appropriate. Between the pad VLED + and N1, N2, N3 and N4 (the latter are the returns of each branch, you will notice that they go to the drain of each transistor.