@Dudel daca te referi la asta
By Sony had already though of this problem and there is an easy solution:
  • Make sure the system is off.
  • Hold down the Power Button for 5-6 seconds - until you hear the second beep.
  • That's it, your video settings are reset and you should be able to choose your input and configure it from there.
sa stii ca e gresit ce ai zis, prin aceasta metoda se reseteaza setarile de video ale PS3, adica poti sa folosesti un cablu AV si de acolo sa intri in setari si sa faci ce vrei, nu-ti seteaza rezolutia. aceasta metoda se face cand ai consola setata pe hdmi si vrei sa treci la component sau AV, neavand HDMI la TV. sper ca ai inteles