Dell Latitude E4310 no power on
Posted: Mon Sep 18, 2017 1:12 pm
Dell Latitude E4310
PCB: NAL60 LA-5691P
Problem reported: No power on with adapter or battery, not charging.
Observation.
19v was okay but there was no 3.3v ALWP AND 5VALWP, So step by step I checked PU2 (N0608098) for input voltage and enable pin, all okay. I checked for short on 3.3VALWP and impedance was 0.026 ohms but 5VALWP was 0.001 ohms, I realized that was a short, so I deleted shortpad PJP6 to see if short was coming from PL5 or from the board itself and I realized there was no short on the board but short was still on PL5, So I decided to remove PC35 and voila short was gone. PC35 was damage so I replaced and solder PJP6 back and board works perfectly.
Job done.
PCB: NAL60 LA-5691P
Problem reported: No power on with adapter or battery, not charging.
Observation.
19v was okay but there was no 3.3v ALWP AND 5VALWP, So step by step I checked PU2 (N0608098) for input voltage and enable pin, all okay. I checked for short on 3.3VALWP and impedance was 0.026 ohms but 5VALWP was 0.001 ohms, I realized that was a short, so I deleted shortpad PJP6 to see if short was coming from PL5 or from the board itself and I realized there was no short on the board but short was still on PL5, So I decided to remove PC35 and voila short was gone. PC35 was damage so I replaced and solder PJP6 back and board works perfectly.
Job done.