Hi to everyone since this is my first post. I bought a powerbook 190 cs from a second hand market and it worked fine but one day I tried something with another powersupply and smoke came out of it. I opened it up and saw a diode was fried and a transistor or a regulator I can't really see what it is. On the PCB it says dz01. So please help me if you can in anyway. Thank you and I wish you all a great week.