¿ for how long should i leave diagnose pixel fix function?

i have a small problem with ym DS screens and i was suggested i use pixel fix for fixing it, how long should i let it work?

 

[size=8pt]
Do you have stuck pixels? What color are they? If they're red, green, or blue, running the pixel fix video on repeat overnight should get rid of it (them). If the pixel(s) is BLACK, well, it's considered a dead pixel and those can not be fixed.

 

look on non emulation help my topic of 'odd problem with my ds screens v2' i posted some pics there and they are mostly blue but it did not fixed them, and im gonna need to start making call to see where the *bleep* is the nintendo store in my country (club nintendo the official magazine once had said phones, i called the phones were switched what once were ninty phones is now a laundry in a different state)

edit wonderfull nintendo does not has any stores in venezuela wonderfull now i need to sell a kidney if want to repair the DS