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by windsor
Mon Mar 28, 2016 5:51 am
Forum: Laptop Case Studies
Topic: Lenovo g570 la- 675ap half power on
Replies: 4
Views: 3405

Lenovo g570 la- 675ap half power on

Case study : Lenovo g570 la- 675ap coffee inside no power on properly dc load only 0.17amp after diagnose u38 mosfet not working properly . u38 passing 5v alw to 2.7v only when power on. Culprit is r646 20k ohms resistance and also track broken vsb to u38 gate . make track and change 20k resistance ...

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