NEED help Lenovo G580 turn on for 2 seconds and afte

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NEED help Lenovo G580 turn on for 2 seconds and afte

Postby blonzi81 » Fri Jun 29, 2018 6:45 pm

Hi there, I have a Lenovo G580 laptop when I want to start it lights the LED for 2 seconds, starts the fan after it goes out and still restarts.
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NEED help Lenovo G580 turn on for 2 seconds and afte

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Re: NEED help Lenovo G580 turn on for 2 seconds and afte

Postby charmee » Sat Jun 30, 2018 3:10 am

sir are u a technician? if u are try to acquire a motherboard diagnostic tester i prefer pti8 or higher to see basically what happen. it also check the correct voltage of the mobo. i have the same issue my problem is the power supply no 3.3 volts its a lenovo ideapad 320 water damage just an open fuse and burned fets.
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Re: NEED help Lenovo G580 turn on for 2 seconds and afte

Postby matic_s » Sun Jul 01, 2018 9:23 am

Hello!

First specify the motherboard marking code.
According to the picture the motherboard is Wistron LG4858xxxx, 48.4xxxx.011.

Does the laptop reacts to the power button, or it starts immediately after connecting the power supply (without pressing to the power button)?
Measure the voltages to ground on all coils, when the laptop is turned on (the power LED is turned on).
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Re: NEED help Lenovo G580 turn on for 2 seconds and afte

Postby blonzi81 » Mon Jul 02, 2018 8:00 pm

The motherboard is LG4858 UMA MB11291-1 48.4SG06.011.,and yes when the laptop is turn on power led is on,and i only turn on and off from the power button .
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Re: NEED help Lenovo G580 turn on for 2 seconds and afte

Postby matic_s » Sun Jul 08, 2018 11:00 am

Ok.
matic_s wrote:Measure the voltages to ground on all coils, when the laptop is turned on (the power LED is turned on).
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Re: NEED help Lenovo G580 turn on for 2 seconds and afte

Postby blonzi81 » Mon Jul 09, 2018 10:18 pm

I can't because is only 2 second turn on , after turn off or just restarting
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Re: NEED help Lenovo G580 turn on for 2 seconds and afte

Postby matic_s » Wed Jul 11, 2018 8:24 pm

If it turns on for two seconds it is more than enough time to measure the voltages. You just have to turn on the laptop multiple times to measure all of the voltages.
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