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Harlequin
Paper Tape
Posts: 1
Registered: ‎01-26-2017
Location: US
Views: 649
Message 1 of 4

Lenovo Y510P hard-to-pin-down power issues

I've had my Y510P for almost 4 years now with no major issues ot speak of, until a few days ago. I home to find my laptop dead and my power supply making a chirping sound (NOTE: the power supply only makes the sound when plugged into the laptop) and no indicator LEDs lit on my laptop. I tested the charger with a multi-meter and it reads the ~20v that it should, but again, no response from the laptop.  I also tried the "remove battery/charger, hold power button for 30sec to discharge static" which didn't help at all.

 

Figuring I'd start with the easiest solution, I ordered a replacement charger, that produced no better results. My multi-meter reads the charger at ~20v, I plug it into the laptop, nothing happens (not even charging lights) and strangely when I test the charger AFTER it has been plugged in it read ~0.2V. The replacement charger doesn't make the chirping sound.

 

I figured the issue was some kind of short in the laptop's power jack, so I dis-assembled the laptop and removed the jack. If this were the problem it would be an easy enough fix, that doesn't look like the case. When I plug the charger into the now-detatched jack adn test the voltage coming out of the jack I get the expected ~20v. But if I test the jack while it is plugged into the mother board I get low to no reading.

 

I am hoping the issue is somehow power related, blown MOBO fuse or something causing it to short out considering dead motherboards usually still charge/try to POST. What is the next step I should take? I'm no longer under warrranty (and even if I was I'm pretty sure I voided it taking the laptop apart). Is there a good way to tell the difference between a short and a fried motherboard?

 

Thanks in advance.

 

EDIT: I've also tested the 2 fuses on the back edge of the MOBO and both look like they haven't been blown.

Retired Support Specialist
Posts: 915
Registered: ‎07-05-2016
Location: GB
Views: 527
Message 2 of 4

Re: Lenovo Y510P hard-to-pin-down power issues


@Harlequin wrote:

I've had my Y510P for almost 4 years now with no major issues ot speak of, until a few days ago. I home to find my laptop dead and my power supply making a chirping sound (NOTE: the power supply only makes the sound when plugged into the laptop) and no indicator LEDs lit on my laptop. I tested the charger with a multi-meter and it reads the ~20v that it should, but again, no response from the laptop.  I also tried the "remove battery/charger, hold power button for 30sec to discharge static" which didn't help at all.

 

Figuring I'd start with the easiest solution, I ordered a replacement charger, that produced no better results. My multi-meter reads the charger at ~20v, I plug it into the laptop, nothing happens (not even charging lights) and strangely when I test the charger AFTER it has been plugged in it read ~0.2V. The replacement charger doesn't make the chirping sound.

 

I figured the issue was some kind of short in the laptop's power jack, so I dis-assembled the laptop and removed the jack. If this were the problem it would be an easy enough fix, that doesn't look like the case. When I plug the charger into the now-detatched jack adn test the voltage coming out of the jack I get the expected ~20v. But if I test the jack while it is plugged into the mother board I get low to no reading.

 

I am hoping the issue is somehow power related, blown MOBO fuse or something causing it to short out considering dead motherboards usually still charge/try to POST. What is the next step I should take? I'm no longer under warrranty (and even if I was I'm pretty sure I voided it taking the laptop apart). Is there a good way to tell the difference between a short and a fried motherboard?

 

Thanks in advance.

 

EDIT: I've also tested the 2 fuses on the back edge of the MOBO and both look like they haven't been blown.


Hi Harlequin and welcome to the community,

 

Could you please supply an image of the Main board, boths sides? i can give it a visual inspection and see if anything jumps out.

 

Hope this help you and let us know how you get on

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Guru
Posts: 3,429
Registered: ‎04-02-2014
Location: MX
Views: 515
Message 3 of 4

Re: Lenovo Y510P hard-to-pin-down power issues

When you tested the dis-assembled motherboard, was it still connected to the battery?

 

You seem quite knowledgable, but have you tried plugging your charger via a power strip that has a ground check light on? It seems like there is some sort of shorting but not sure where.

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alaniadood2
What's DOS?
Posts: 1
Registered: ‎01-14-2019
Location: US
Views: 249
Message 4 of 4

Re: Lenovo Y510P hard-to-pin-down power issues

Hey there, do you have any updates? I just encountered the chirping problem on my Y510p. Judging from the smell though, I think something may be fried :/

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