Hello everyone! 
This problem of the "peeeee" sound is a bug (not serious) on R111 and R125 resistor values of Zemmix Neo PCB.
I think the correct value should be equal to R122 because now it compromise the correct luminance of all LEDs.
I've opened up my Neo to see what the values are for R111, R125 & R122
I could read the value of R111 & R125 (100 Ohm), but resistor R122 is so tiny, that I could'nt read it with (even with a maginfing glass)
I'm an experienced electronics engineer and from my point of view it's gonne be to hard to replace the resistors by hand with a solder iron. I think you will need a reflow setup to fix it. Also I think a permenant fix in the BIOS is the best solution. Thank you KdL for that.
What I did see, was the beauty of the PCB and the quality of all the parts and housing. Thanks again mygodess for delivering such a beauty.
I could make a timeout of 2-3sec for show the changes or add a key to toggle the lights or again make a new vdp 
no it's a stupid "if"... but tomorrow! 