HP 15R - LA-A992P SKIP CHARGING AFTER POWER ON BUT WITHOUT POWER ON EVEN BATTERY CHARGING GOOD  1.62AMP.  WHEN ADAPTER PLUGGED.

WHILE STOP CHARGING AMBER LED TURNS INTO WH ACLED.

WITHOUT POWER ON BATTERY IS CHARGING GOOD AND LAPTOP WORKS WELL ON BATTERY ALSO.

WHEN BUTTON PRESS FOR POWER ON ACDRV GOES LOW AS SHOWN BELOW WAVEFORM RESULTING A DROP IN B+ LINE TOO.

BY OBSERVING ABOVE WAVEFORM DECIDE TO REPLACE ACFET,RBFET, CHECK BATTERY SM BUS BIDIODE, REPLACED CHARGING CONTROLLER  BUT NO WAY, BATTERY REMAINING CAPACITY AND PERCENTAGE ALL GOOD SHOWN IN WINDOWS AND BACKUP IS GOOD,

FINALY REFLASH MAIN BIOS AND FOUND ISSUE RESOLVED.

ZOOM IMAGE ALONG WITH GOOD BOARD READING