Hi,
I have a problem with my laptop. I just short circuit the eDP cable by an accident. Then i try to open it. i press the power button it was powered the rgb keyboard but after a few seconds and it just shut down. When i opened it up and unplug everything from motherboard i can't see any physical damage from ICs, capacitors and MOSFETs. I found a broken fuse FG3. But it just powers up LCD Display. I try to power it on with DC Adapter and feel some heat from an IC. IC is repeatedly power on and off. I tracked the schematic and i found some MOSFET and main 5V/3.3V controller. After that i figured there is short circuit from 3.3V MOSFET side. When i check the MOSFET and IC, there is no problem with it. I followed the tracks and i found the which side has short circuit is. I desoldered J7 jump and short circuit was gone. But i can't find where is it. I checked capacitors, fuses, resistors and ic's (+3VALW track) but i can't find it. I suspect PCH chipset however i can't be sure and i don't have equipment to desolder it and check. Any ideas? Thank you.
I have a problem with my laptop. I just short circuit the eDP cable by an accident. Then i try to open it. i press the power button it was powered the rgb keyboard but after a few seconds and it just shut down. When i opened it up and unplug everything from motherboard i can't see any physical damage from ICs, capacitors and MOSFETs. I found a broken fuse FG3. But it just powers up LCD Display. I try to power it on with DC Adapter and feel some heat from an IC. IC is repeatedly power on and off. I tracked the schematic and i found some MOSFET and main 5V/3.3V controller. After that i figured there is short circuit from 3.3V MOSFET side. When i check the MOSFET and IC, there is no problem with it. I followed the tracks and i found the which side has short circuit is. I desoldered J7 jump and short circuit was gone. But i can't find where is it. I checked capacitors, fuses, resistors and ic's (+3VALW track) but i can't find it. I suspect PCH chipset however i can't be sure and i don't have equipment to desolder it and check. Any ideas? Thank you.
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