Thanx for ur reply!
well this morning we seemed to make it,the slot is working again.But just as the new game was inside (which was working yesterday), after the intros and menu,when the game starts,the PS2 switches off by itself, and the red light on it is blinking.:|
what a hella luck I have these days.

upd: ugh..the silly person forgot to connect the fan..nm O_O