|
|
|
|||||||
|
|
Thread Tools | Display Modes |
12-20-2018, 10:12 AM
|
#1 |
|
Member
Join Date: Feb 2015
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 66
|
Lenovo Z50-70 crashes when charger connected, erratic working on battery
Hi,
my Lenovo Z50-70 NM-273 with Intel i5 and Nvidia N15 discrete graphics work only on battery. And even on battery it is not predictable how long it will last before crashing. Sometimes work for whole hour, sometimes 5 minutes, regardless of what I'm doing. Same is happening no matter what windows is installed. Curretntly it is on Win 7 64bit, all drivers are installed without any problem - chipset, both graphics etc. Laptop does not overheating, it's clean and with new thermal paste. Furmark works just fine and temperature does not exceed 65 degrees. Everything seems OK and, for no reason, laptop crash and stays off. Without restarting. Every time. No BSOD, no any error message. Other problem is that when power adapter is plugged, it crashes instanly. I can power it again with power adapter, but it crashes in shorter intelval every time. For example, it works on power for 5 minutes an crashes, than next time works for 3 minutes etc. At last, it can not even start. When laptop is off, baterry charging works fine. Does anyone have experince with that specific problem? I have schematics but no boardview. Last edited by kronikus; 12-20-2018 at 10:19 AM.. |
|
|
|
12-21-2018, 02:10 AM
|
#2 |
|
Badcaps Veteran
Join Date: Jun 2015
City & State: siliguri
My Country: india
Line Voltage: 220vac,60hz
I'm a: Professional Tech
Posts: 4,413
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
Gpu issue??
|
|
|
|
|
12-21-2018, 09:48 AM
|
#3 |
|
Boardkiller
Join Date: Feb 2014
City & State: slovakia
My Country: slovakia
Line Voltage: 230VAC 50Hz
I'm a: Hobbyist Tech
Posts: 2,654
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
check voltages on both side of PQ302, PQ303, PR306 when connected and disconnected charger
|
|
|
|
|
12-21-2018, 09:56 AM
|
#4 |
|
Member
Join Date: Feb 2015
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 66
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
It passed all graphic tests, works steady 30+ minutes on Furmark. Official drivers for Intel and Nvidia gpu are installed without any problems. Passed dxdiag. Passed Lenovo diagnostic on all components. Maybe the most important fact is that laptop crashes instantly when charger is plugged in? Every time. Even without hard disk. Can that be related to graphics?
|
|
|
|
|
12-21-2018, 09:57 AM
|
#5 |
|
Member
Join Date: Feb 2015
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 66
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
Ok, I'll do measurements on PQ 302/303 and PR306.
|
|
|
|
|
12-21-2018, 10:52 AM
|
#6 |
|
Member
Join Date: Feb 2015
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 66
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
On battery, turned off:
Drain/Source/Gate PQ302 15.2/14.8/14.5 PQ303 15.2/.15.2/0 PR306 0(VIN side)/0(diode side) On battery, turned on: Drain/Source/Gate PQ302 15.3/14.9/14.6 PQ303 15.2/15.2/0 PR306 0(VIN side)/0(diode side) On charger with battery, turned off: Drain/Source/Gate PQ302 20/20/5 PQ303 16/20/20 PR306 20(VIN side)/0 (diode side) On charger and battery, when turned on and than removed battery, PQ303 Drain stay 16.8V untill turned off. Than drops to 0.8V and stay 0.8V unill battery reconected, when jumps to 16.8. Again, when battery was removed during work, Drain stay at 16.8V untill turning off by power button or crashing. Last edited by kronikus; 12-21-2018 at 10:55 AM.. |
|
|
|
|
12-21-2018, 02:49 PM
|
#7 |
|
Boardkiller
Join Date: Feb 2014
City & State: slovakia
My Country: slovakia
Line Voltage: 230VAC 50Hz
I'm a: Hobbyist Tech
Posts: 2,654
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
pr306 was mistake. i mean pr316
|
|
|
|
|
12-21-2018, 04:20 PM
|
#8 |
|
Member
Join Date: Feb 2015
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 66
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
On both side of PR316 voltages are same as on the Drain of PQ303.
Voltage drop across some coils: PL303 8.2mV; PL304 9.9mV; PL307 1.7mV; PL701 5.9mV; PL9 6.9mV. |
|
|
|
|
12-21-2018, 05:34 PM
|
#9 |
|
Member
Join Date: Feb 2015
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 66
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
Some tests. I removed RTC battery so don't pay attention to the time.
|
|
|
|
|
12-21-2018, 05:38 PM
|
#10 | |
|
Badcaps Veteran
Join Date: Jul 2004
City & State: North Springfield, Vermont
My Country: USA
Line Voltage: 118-127V 59-63.5 Hz-> actualizo: pérdido de voltaje
I'm a: Knowledge Seeker
Posts: 6,038
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
Quote:
__________________
ASRock B550 PG Velocita Ryzen 5 "Vermeer" 5600X 32 GB G.Skill Trident Z Neo F4-3600C18D-32GTZN Sapphire Nitro+ Radeon RX 6600 XT eVGA Supernova G3 750W Western Digital Black SN850 1TB NVMe SSD "¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr"!" -mí mismo "There's nothing more unattractive than a chick smoking a cigarette" -Topcat "Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat "did I see a chair fly? I think I did! Time for popcorn!" -ratdude747 Last edited by RJARRRPCGP; 12-21-2018 at 05:40 PM.. |
|
|
|
|
|
12-21-2018, 11:38 PM
|
#11 |
|
Boardkiller
Join Date: Feb 2014
City & State: slovakia
My Country: slovakia
Line Voltage: 230VAC 50Hz
I'm a: Hobbyist Tech
Posts: 2,654
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
did u try another charger?
|
|
|
|
|
12-22-2018, 02:20 AM
|
#12 |
|
Member
Join Date: Feb 2015
City & State: Zagreb
My Country: Croatia
I'm a: Knowledge Seeker
Posts: 66
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
Yes, It is power loss. Laptop suddenly turns off and stay off.
I tried another charger and other battery, too. Nothing changed. |
|
|
|
|
05-29-2020, 09:22 PM
|
#13 |
|
New Member
Join Date: May 2020
City & State: Singapore
My Country: Singapore
I'm a: Knowledge Seeker
Posts: 1
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
Hi did you find the problem? I am having similar issues with my Z50-70 laptop.
|
|
|
|
|
07-12-2021, 11:17 PM
|
#14 |
|
Member
Join Date: Sep 2017
City & State: iasi
My Country: romania
I'm a: Knowledge Seeker
Posts: 61
|
Re: Lenovo Z50-70 crashes when charger connected, erratic working on battery
i have a same problem.advice
|
|
|
 |
| Thread Tools | |
| Display Modes | |
|
|
Linear Mode
