Question Dell Inspiron 7720 has shorted +VCC_DGFX_CORE

Jan 20, 2021
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Hi, Iam new to this forum, but i was wondering if anyone with more experience could help me. Basically a had this old Dell inspiron 7720 on my table for repair and i have no clue what to do next. I tryed voltage injection but only thing thats heating up is GPU (1.3V 600mA). I soldered the hookup wires to PC4 (page 56). Is there a way to determin location of short circuit other than voltage injection if a have the vhole +VCC_DGFX_CORE shorted? More details on picture and board datasheet. Thanks for help.
Datasheet link: http://www.s-manuals.com/notebook/dell_inspiron_7720
 

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