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HP-15S 0P5H POWER ON TRIP AND CYCLE

T

Test Admin (03 Sep 2025)

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0P5H POWER ON AND OFF,CYCLE..NO SLP_S4# OR SLP_S3#

ADAPTER PLUG ALL VOLTAGES AND BIOS PIN2 WAVEFORM SEEMS GOOD

 

BUT AFTER BUTTON PRESS PMPWRBTN NOT HIGH PROPERLY

ABNORNAL PMPWRBTN# WF

 

EVEN 3.3V ALSO CYCLE AND CAUSING ACLED OFF FOR A WHILE

 

VCCIN_AUX CYCLE AS 3V-5V
ABNORMAL PMPWRBTN# vs  RSMRST# WF

RSMRST# ASERTED AGAIN AS SHOWN  ABOVE WF

 

REMOVE BIOS CHIP TO CHECK PAD DIODE VALUE AND FOR  SUPPLY LINES TRIPPING, FOUND NO CHANGE.

 

SO CHECK ALL SPI-eSPI PAD TRACK TOWARDS CPU,FOUND ONE OPEN

 

FIX THE TRACK,NOW ALL OK

 

FOE MORE DETAILS,STAY LOGIN TO YOUR OWN DATASITE....www.EasyMB.in

 

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