Author Topic: repairing an HP 8530W laptop that does not turn on  (Read 435 times)

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Offline Sky_hawk

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repairing an HP 8530W laptop that does not turn on
« on: September 08, 2018, 12:43:03 pm »
I have a HP 8530W that does not turn on. someone broke the power-button and in the process a small piece of pcb was ripped right of the PCB.
My problem is the +3VL that is coming into the power button circuit is not present.

https://github.com/janwilmans/nullptr/issues/1

I feel I'm at a loss, can someone help me understand where +3VL is suppose to come from? the link includes all schematics and an excerpt of the piece I think are relevant.

My main problem in understanding the tps51120, is it suppose to deliver +3v when EN0=EN1=0 ? Datasheet is linked in also, but it does not explicitly say that it does _or_ does not do this (I think)

Greetings,

Jan
« Last Edit: September 08, 2018, 05:46:14 pm by Sky_hawk »
 


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