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Old 07-15-2019, 09:22 AM   #1
mazloum
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Default lenovo g50-30

aclu9/aclu0 rev 1.0

when pressing power it will work for exactly 38 secons and completely shutts off.
with and without battery the same
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Old 07-15-2019, 11:02 AM   #2
mazloum
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Default Re: lenovo g50-30

it will hut down exactly after 40 seconds and not 38 as i mentioned:
when i try to boot it again, the same time it will take to shutoff
i changed ram, reset bios, with no success
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Old 07-15-2019, 11:44 AM   #3
piernov
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Default Re: lenovo g50-30

Known good power supply with the proper power rating?
Maybe try clean ME region BIOS.
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Old 07-15-2019, 01:15 PM   #4
mazloum
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Default Re: lenovo g50-30

I found the problem here... Pin 1 must be 3v but it has no volts. The ic is u3901 which is sensor.
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File Type: jpg IMG-20190715-WA0159.jpg (143.7 KB, 38 views)

Last edited by mazloum; 07-15-2019 at 01:17 PM.. Reason: Un suffucient describes
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Old 07-15-2019, 09:42 PM   #5
mazloum
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Default Re: lenovo g50-30

Is there any alternative for this ic?
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Old 07-15-2019, 10:12 PM   #6
mazloum
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Default Re: lenovo g50-30

Is there any alternative for this ic?
I need to give it 3v but it is very small and cannot solder any wire there
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Old 05-21-2020, 10:10 AM   #7
Chieftain
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Default Re: lenovo g50-30

Check pu701.
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