Re: Lenovo G580 - Power Plane Regulator 5v3p3v - short to ground

i have marked the short...

Re: Lenovo G580 - Power Plane Regulator 5v3p3v - short to ground

ridamouh159 this is the exact same board with same components but i forgot to take pictures before removing parts.

does yours have the same problem?

Re: Lenovo G580 - Power Plane Regulator 5v3p3v - short to ground

51125 TPS resistance to ground: only pin 12 (VIN) is giving 95ohm all other pins show no resistance (no value on meter).

I have a Lenevo g580 that does not turn and there are no lights.

from what i was able to deduce from the web is that i should check the 5v and 3v rails.

PU4103 power regulator (page 41 on schematic) 3v (pin3) was good but 5v (pin13) was only giving ~1.6v - VIN from power supply 10.8V from battery terminal

while probing around the area for shorts to ground i accidently brushed up on the chip and the thing was burning hot. since i couldn't find any shorts i removed the chip and reapplied voltage. PU4104 nearly instantly heated up and was giving of a little...

Re: New Members - please post your introductions here

Hello, just recently gotten into electronics with hope of repairing my laptop. I had basic electronics in high school (transistor, caps, resistors, coils etc.). Hoping to learn and contribute with time.