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lenovo yoga 3 pro totally dead

Lenovo yoga 3 pro, totally dead
#1
Hi!

I have this laptop and first let's go through what happened

Went totally dead, no reaction
I thought it was the adapter so I bought a new one = nothing happened
Opened up the laptop and adjusted the battery cable = Started working
Worked a couple of days and then went totally dead again

Now nothing works

I have opened the laptop, removed basically all removable components. It does not start without the battery or harddrive or anything disconnected.

Testing with voltmeter I can see 5.3V basically everywhere inside the laptop. I was watching a YT video about MOSFET but seems everything is getting power. Even the power indicator light has power but never lights up

What can I more test?

Thanks
Reply
#2
(09-05-2020, 02:04 PM)pixellegolas Wrote: Hi!

I have this laptop and first let's go through what happened

Went totally dead, no reaction
I thought it was the adapter so I bought a new one = nothing happened
Opened up the laptop and adjusted the battery cable = Started working
Worked a couple of days and then went totally dead again

Now nothing works

I have opened the laptop, removed basically all removable components. It does not start without the battery or harddrive or anything disconnected.

Testing with voltmeter I can see 5.3V basically everywhere inside the laptop. I was watching a YT video about MOSFET but seems everything is getting power. Even the power indicator light has power but never lights up

What can I more test?

Thanks

Hi,

I couldn't find any specific technical manuals for this laptop, but it sounds like something went bad or a connection is shorted somewhere.

It's also possible the battery is not charging for some reason, so it's always dead and won't fully power on.

Here are a few links to some troubleshooting information. Have you tried a different OEM power adapter?
Hopefully something here will help.

Page 19 for Power System Check:
    LINK


Other guide for testing power:
    LINK

Service app:
    LINK

Other Support Forum Posts regarding power Issues with this laptop:

LINK
LINK
LINK
LINK
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