Hey! yesterday i bought an 9504 drive from a reseller here on my country(Venezuela- so i dont know if they are genuine), it was unlocked, but i put it on a console that needed to update to lastest dashboard and so it became locked. i did kamikaze to unlock it. wrote firmware. and then started to play some games. i could hear the spindle motor sounding wierd, after 1 hour game play games will not work. if you put a disc it will sound like its stuck and will give open tray error right away. i have few pcbs, i tried an tx unlocked pcb, and still wont play games. what i want to know if, if i replace the spindle motor can the pcb that i unlocked break it again? or maybe it came like that? one wierd thing is that laser came overpowered. it was 2.15 ohms when it checked it, i turned up to 4.