Need Schematic Lenovo Yoga 720-13IKB LA-E551P REV 2.0

gmorb · 08-07-2018, 12:40 AM

Looking to fix a Lenovo Yoga 720-13IKB which turns on but wont post.

gmorb · 08-13-2018, 01:26 PM

northpoint · 03-08-2019, 08:30 AM

I have a short measured from a coil and some surrounding caps. So far I am ASSUMING its a 5v circuit.

I have battery charge light.
I have battery and power light.
Battery charges to full (8v) no problem.
Power button responds with power light coming on.

No power up from board.

What is crazy is I cannot locate the 19v rail in this thing. I know its there or I would not have the other rails. I do have a short on a circuit that I assume is a 5v rail. Short to ground along with surrounding caps.

**polytek** · 03-09-2019, 04:13 AM

No power problem: power button not light; in your case it's power down, it can be caused by a short in cpu or gpu section; or a bad me region, you can try to flash the bios and ec bios first.
the schematic is unvailablle on the payed forum.

galleria1313 · 07-31-2020, 02:54 PM

Hi Guys i have similar problem but i dont have schematic to check all rails is they are OK or Short.
Any update or schematic or at least to tell which rail is short on your board.

Thank you !

08-07-2018, 12:40 AM	#1
gmorb Member Join Date: Sep 2017 City & State: san diego My Country: United States I'm a: Knowledge Seeker Posts: 22	Lenovo Yoga 720-13IKB schematic and boardview? Looking to fix a Lenovo Yoga 720-13IKB which turns on but wont post.

08-13-2018, 01:26 PM	#2
gmorb Member Join Date: Sep 2017 City & State: san diego My Country: United States I'm a: Knowledge Seeker Posts: 22	Re: Lenovo Yoga 720-13IKB schematic and boardview? Bump

03-08-2019, 08:30 AM	#3
northpoint Member Join Date: Dec 2012 City & State: Osceola, Indiana My Country: United States Line Voltage: [email protected] I'm a: Knowledge Seeker Posts: 39	Need Schematic Lenovo Yoga 720-13IKB LA-E551P REV 2.0 I have a short measured from a coil and some surrounding caps. So far I am ASSUMING its a 5v circuit. I have battery charge light. I have battery and power light. Battery charges to full (8v) no problem. Power button responds with power light coming on. No power up from board. What is crazy is I cannot locate the 19v rail in this thing. I know its there or I would not have the other rails. I do have a short on a circuit that I assume is a 5v rail. Short to ground along with surrounding caps.

03-09-2019, 04:13 AM	#4
polytek Badcaps Veteran Join Date: Dec 2013 City & State: tunisia My Country: TUNISIA Line Voltage: 230V/50Hz I'm a: Professional Tech Posts: 481	Re: Need Schematic Lenovo Yoga 720-13IKB LA-E551P REV 2.0 No power problem: power button not light; in your case it's power down, it can be caused by a short in cpu or gpu section; or a bad me region, you can try to flash the bios and ec bios first. the schematic is unvailablle on the payed forum. Last edited by polytek; 03-09-2019 at 04:15 AM..

07-31-2020, 02:54 PM	#5
galleria1313 New Member Join Date: Jan 2019 City & State: Chicago My Country: United States I'm a: Knowledge Seeker Posts: 5	Re: Need Schematic Lenovo Yoga 720-13IKB LA-E551P REV 2.0 Hi Guys i have similar problem but i dont have schematic to check all rails is they are OK or Short. Any update or schematic or at least to tell which rail is short on your board. Thank you !

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