IndiaReFix - Laptop & TV Repair Forum

LAPTOP SHUTDOWN IN 1 MIN AUTOMATICALY (RESOLVE AFTER LONG TIME)

MODEL- DELL INSPIRION 5010

BOARD PART - DG15 MB 099091-1


DIAGNOSIS@@@@

CHECKED FIRST THIS IS GRAPHICS MODEL AND IT MADE EXCESS HEAT

CHECKED FAN NOT ROTATE

CHECKED FAN CONECTOR THERE IS NO 5V IN PIN 1

THEN GIVE 5V TO FAN PIN 1 FROM USB LINE

AFTER THAT FAN WORKING BUT STILL SAME ISSUE SHUTDOWN IN 1 MIN

THEN THOUGHT THIS IS ATI ISSUE

SO GO FOR INTEL CONVERT AND CONVERT TO INTEL AND CHECKED SAME ISSUE

THEN I DO BRUSH THE BIOS BUT SAME ISSUE

THEN AGAIN BRUSH BIOS WITH CLEAN ME REGION BIOS ALSO SAME ISSUE

THEN REPLACE ALL THERMAL SENSOR Q3901,Q3902,Q3904,Q3905 BUT SAME ISSUE

THEN I REPLACE CPU AND REFLOW PCH ALSO SAME ISSUE

CHANGE THE HEAT SHINK WITH FAN SAME ISSUE

THEN TOUGHT IF TO RESOLVE THE FAN VOLTGE MAY BE WORK

THEN GO TO CHECK FAN PIN 1 NO 5 VOLTAGE

TRACE IN SCHEMATICS FAN PIN 1 CONECT TO THERMAL IC U3901 PIN 25,26 THERE IS NO VOLTAGE

CHECK THE PIN IMEDANCE OK BUT NO VOLTAGE

CHECKED THE VDD 5V PRESENT IN PIN 27, 24 OK BUT NO VOLTAGE FOR FAN

THEN REPALCE THE U3901 IC BUT NO VOLTAGE FOR FAN

THEN CHECKED FOR PIN 1 VDD 3.3V RUN ,,,, HERE NO VOLTAGE

TRACE IT FOUND R3902 IS OPEN SO THAT NO 3.3V IN PIN 1


RESOLUTION


JUST REPLACED R3902 RESISTER ALL VOLTAGE OK

PIN 25, 26 NOW 3V TO 5V AS PER HEAT FOR FAN

PIN 1 3.3V

NOW ALSO FAN CONECTOR PIN 1 PRESENT FAN VOLTAGE

AND FAN WORKING FINE

THEN CHECKED BOARD ALSO WORKING FINE NO SHUTDOWN

DONE AFTER LONG TIME 5 DAYS

thx alot

Good work