Toshiba P745 won't power on
I have a Toshiba P745 PBQAA LA-7101P Rev 1.0. Laptop has power issues. First it refused to power on with battery power, even though it would charge battery. But after removing the battery it was working correctly. Now after taking laptop apart and cleaning board, it refuses to turn on with or without battery, when power switch is pressed, the power light will turn on for 3-5 seconds and it will turn off. At this time there is no fan spin & no display. I believe there is partial short on 3v line, getting a low resistance (less than 100 ohms) on the 3v power supply coil.