Dell Vostro 3550 (v A01 with BQ24707) Plugged in, Not Charging
Hello,
i have similar problem as https://www.badcaps.net/forum/showthread.php?t=37828
QUOTED
-It works on charger (without battery connected-only charger)
-It works on battery (without charger connected-only battery)
-& it also works when plugged in battery & charger, but it's not charging the battery
//Confirming, i have same issue, but problem started from charger, centre PIN is outputing 10V+ and jumping randomly 19V
and..
QUOTE
The IC cannot maintain the input current level if the charge current has been already reduced to zero. After the
system current continues increasing to the 1.66X of input current DAC set point (with 2.5ms blank out time),
IFAULT is pulled to low and the charge is disabled for 1.3s and will soft start again for charge if ACOC condition
goes away. If such failure is detected seven times in 90 seconds, charge will be latched off and an adapter
removal and system shut down (make ACDET < 0.6V to reset IC) is required to start charge again. After 90
seconds, the failure counter will be reset to zero to prevent latch off.
Think the IC is dead / shorted...Or some cap around shorted...
It's a hardcore case without schematics...
// Measured and only PIN12 and PIN13 (CAP, RES acting like shorted).. measured further.. merged lines under R010 (PR4916)?
QUOTE
The question is, which one of those 2 different voltages is right?
Because 1st indicates that charger is not detected & second that it's on protect mode...
// Author posted PU4001 (BQ24707A) pinouts in wrong order. It should be 1 to 20, but he posted first one 20 to 1 measurements under reverse pin order.
As i understand most common schematic is 10245-1 and thats revision A00
10245-1 - 10260-1 INTEL A00 Charging IC PQ4001 BQ24745 28PIN HPB
10245-2 - 10260-2 INTEL A01 Charging IC PQ4001 BQ24707A 20PIN (5pin GND in centre) Dell Inspiron 14R 5420 use BQ2407A
10245-3 - 10260-3 AMD? A00 Charging IC known as QUEEN M12
etc...
Dell Vostro 3550
CN OYORGW 70166
1AB-OMRN-A01
10245-2
48.4IE01.021
DQ15 Intel MB
Made in China
Story untill today:
Long long time ago.. around 6+years ago, this device got covered coffee and device had "insurance", motherboard got replaced, nobody tested charger... device worked fine untill randomly one day anomalies started...
Laptop/Notebook (however we call that machine/device) is (actually was) working fine. One day i noticed [Battery 0] start giving Not charging errors. So.. based on math, the battery was 6+years old and mainly device was used as "desktop PC" charger always connected. And the day when i needed device in other places with powered ON, i removed charger and it died immediately (Battery was empty).
Based on information i assumed, battery is old and need replace, so i did. I ordered [BATTERY 1] Green CELL (pro) J1KND battery (7800mAh/86Wh - BatteryMon measured based on charging, its 9000mAh+ and 100Wh+ and designed data is 9600mAh/106Wh), connected it to device and it start charging.. 40% somthing untill 87.7% (im using BatteryBar v3.6.6 and BatteryMon v2.1 B1010).
And then chargin stopped - i didnt know that (i checked log file and noticed that later).
Based on chargin indicator LED i assumed, battery is full and...
So, to get best knowlege how well that battery is performing i started FULL scale battery test (CPU 100%, GPU 100% and no AC connected).
3h30minutes later i got "Battery is below 10%, connect AC" message and test stoped. - bit later when battery "calibrate and reconsentrate" it showed 6.2% discharge left!
I connected charger and ... nothing.. no charging (Message: Battery plugged in, not charging).
So i did "12+ DIY FIX" first 11 points and then bought another battery [BATTERY 2] and started all over again for testing, why its not charging.
BATTERY 0. DELL OEM.. yeah its dead, output is 2.85V (same as charging voltage)
BATTERY 1. GreenCell PRO N4010
BATTERY 2. DELL "original" im not sure is it OEM.
12+ "DIY FIX"
1.Turned off device at night and hoped it start charging.. and in morning. Nothing!
2. Drained notebook "NO AC - NO Battery, NO RTC1, Powerbutton down 30sec+..
i did that 10+ times.. after every boot-up ad driver uninstall mix.
3. https://www.speedguide.net/faq/lapto...ng-windows-380 Uninstalled Battery drivers, rebooted; 1. On battery power - no AC, 2.
On AC power - no battery 3. ON AC and BATTERY power. All 3 times i
uninstalled battery driver, did restart, connect one or another, checked
updates, driver got installed, restarted again and moved to next option.
4. Updated all windows updates.
5. Tested new installation on windows 7, windows 10, ubuntu etc..
6. Booted up on USB
7. Updated BIOS to latest A12 from A11
8. Replaced Charger (ALL 65W, 130W, 240W is detected in BIOS, im using 240W, even china car charger is detected as 90W).
9. Opened notebook, made visual check, used multimeter, measured mosfets,
capacitors, resistors.. 3.3V, 5V and even 19V was present in gate, sourse
and drain (except some of them, but no short, so i assume those are ok!?)
10. Replaced CR2032 (RTC1) battery
11. Replaced BATTERY 1 to BATTERY 2
12. I cried
13. I drink
Seems like im doing something wrong or in wrong order!?
14. Seek help!
And now im out of ideas, where to look (btw i dont have dell vostro 3550
schematic, universal N4010,5100 etc schematic is guide, but does not help much. I dont know what values i have to measure or not. And Also, my dell revision is A01, there is replaced charging IC for more compact one..
Im not expert, so i have multimeter (3 different) soldering irons (5 total), hotgun, other basic tools (tweezers etc..), but no
oscilloscope, fancy magnified camera, flir camera.. etc...
And also, im not good in electronics, i like to learn, but if i dont understand, then its not learning why and how its doing, hatever it should do, but if you only learn to replace parts, then its not learning to fix it, but learning to fix that problem.
Im out of ideas what and where to look. Point me, if i missed something. For just to throw parts on it, is not viable solution. i really want to understand what it should do and how its working.
In short:
Device is working fine! - but its not charging anymore!
Chargers are detected (all 4)
Batterys are detected (all 3: BATTERY 0 is 2.85V, BATTERY 1 is 10.5V, BATTERY 2 is 11.54V and if needed, i can charge them to 12V.. direct charging without balancer.)
Device is running on battery, but not charging it.(not in BIOS, not in device turned OFF, not in OS).
ALL MEASURED Voltages in 4 Groups:
XLSX (Excel file), in some reason PDF shows blank page... but if needed, i cand make "screenshot images"
https://docs.google.com/spreadsheets...f=true&sd=true
IS ACOK reversed? (so, its should be 0? or 3.33V?)
Based on BQ24707 diagram it can be both
Where that ACOK come? From chip?
I have done so many research, looked so many schematics and i found:
Acer Aspire V5-531 (v5 571) is based on BQ24707x
Lenovo B590-LB59A is also BQ24707x
and the "brotherland" DELL Inspiron 14 N4050 is also BQ24707x
NOTE: If those schematics are needed, then let me know!
My plan is to use "dead" motherboard parts.. (soldered CPU and microcracks on those, recycled boards.. etc...) i dont have new or other BQ24707 IC, but i have lots of BQ24735, can i use that? or i should not and use only BQ24707?
OR IC is alive, but i miss something?
BEST REGARD, Thomas
i have similar problem as https://www.badcaps.net/forum/showthread.php?t=37828
QUOTED
-It works on charger (without battery connected-only charger)
-It works on battery (without charger connected-only battery)
-& it also works when plugged in battery & charger, but it's not charging the battery
//Confirming, i have same issue, but problem started from charger, centre PIN is outputing 10V+ and jumping randomly 19V
and..
QUOTE
The IC cannot maintain the input current level if the charge current has been already reduced to zero. After the
system current continues increasing to the 1.66X of input current DAC set point (with 2.5ms blank out time),
IFAULT is pulled to low and the charge is disabled for 1.3s and will soft start again for charge if ACOC condition
goes away. If such failure is detected seven times in 90 seconds, charge will be latched off and an adapter
removal and system shut down (make ACDET < 0.6V to reset IC) is required to start charge again. After 90
seconds, the failure counter will be reset to zero to prevent latch off.
Think the IC is dead / shorted...Or some cap around shorted...
It's a hardcore case without schematics...
// Measured and only PIN12 and PIN13 (CAP, RES acting like shorted).. measured further.. merged lines under R010 (PR4916)?
QUOTE
The question is, which one of those 2 different voltages is right?
Because 1st indicates that charger is not detected & second that it's on protect mode...
// Author posted PU4001 (BQ24707A) pinouts in wrong order. It should be 1 to 20, but he posted first one 20 to 1 measurements under reverse pin order.
As i understand most common schematic is 10245-1 and thats revision A00
10245-1 - 10260-1 INTEL A00 Charging IC PQ4001 BQ24745 28PIN HPB
10245-2 - 10260-2 INTEL A01 Charging IC PQ4001 BQ24707A 20PIN (5pin GND in centre) Dell Inspiron 14R 5420 use BQ2407A
10245-3 - 10260-3 AMD? A00 Charging IC known as QUEEN M12
etc...
Dell Vostro 3550
CN OYORGW 70166
1AB-OMRN-A01
10245-2
48.4IE01.021
DQ15 Intel MB
Made in China
Story untill today:
Long long time ago.. around 6+years ago, this device got covered coffee and device had "insurance", motherboard got replaced, nobody tested charger... device worked fine untill randomly one day anomalies started...
Laptop/Notebook (however we call that machine/device) is (actually was) working fine. One day i noticed [Battery 0] start giving Not charging errors. So.. based on math, the battery was 6+years old and mainly device was used as "desktop PC" charger always connected. And the day when i needed device in other places with powered ON, i removed charger and it died immediately (Battery was empty).
Based on information i assumed, battery is old and need replace, so i did. I ordered [BATTERY 1] Green CELL (pro) J1KND battery (7800mAh/86Wh - BatteryMon measured based on charging, its 9000mAh+ and 100Wh+ and designed data is 9600mAh/106Wh), connected it to device and it start charging.. 40% somthing untill 87.7% (im using BatteryBar v3.6.6 and BatteryMon v2.1 B1010).
And then chargin stopped - i didnt know that (i checked log file and noticed that later).
Based on chargin indicator LED i assumed, battery is full and...
So, to get best knowlege how well that battery is performing i started FULL scale battery test (CPU 100%, GPU 100% and no AC connected).
3h30minutes later i got "Battery is below 10%, connect AC" message and test stoped. - bit later when battery "calibrate and reconsentrate" it showed 6.2% discharge left!
I connected charger and ... nothing.. no charging (Message: Battery plugged in, not charging).
So i did "12+ DIY FIX" first 11 points and then bought another battery [BATTERY 2] and started all over again for testing, why its not charging.
BATTERY 0. DELL OEM.. yeah its dead, output is 2.85V (same as charging voltage)
BATTERY 1. GreenCell PRO N4010
BATTERY 2. DELL "original" im not sure is it OEM.
12+ "DIY FIX"
1.Turned off device at night and hoped it start charging.. and in morning. Nothing!
2. Drained notebook "NO AC - NO Battery, NO RTC1, Powerbutton down 30sec+..
i did that 10+ times.. after every boot-up ad driver uninstall mix.
3. https://www.speedguide.net/faq/lapto...ng-windows-380 Uninstalled Battery drivers, rebooted; 1. On battery power - no AC, 2.
On AC power - no battery 3. ON AC and BATTERY power. All 3 times i
uninstalled battery driver, did restart, connect one or another, checked
updates, driver got installed, restarted again and moved to next option.
4. Updated all windows updates.
5. Tested new installation on windows 7, windows 10, ubuntu etc..
6. Booted up on USB
7. Updated BIOS to latest A12 from A11
8. Replaced Charger (ALL 65W, 130W, 240W is detected in BIOS, im using 240W, even china car charger is detected as 90W).
9. Opened notebook, made visual check, used multimeter, measured mosfets,
capacitors, resistors.. 3.3V, 5V and even 19V was present in gate, sourse
and drain (except some of them, but no short, so i assume those are ok!?)
10. Replaced CR2032 (RTC1) battery
11. Replaced BATTERY 1 to BATTERY 2
12. I cried
13. I drink
Seems like im doing something wrong or in wrong order!?
14. Seek help!
And now im out of ideas, where to look (btw i dont have dell vostro 3550
schematic, universal N4010,5100 etc schematic is guide, but does not help much. I dont know what values i have to measure or not. And Also, my dell revision is A01, there is replaced charging IC for more compact one..
Im not expert, so i have multimeter (3 different) soldering irons (5 total), hotgun, other basic tools (tweezers etc..), but no
oscilloscope, fancy magnified camera, flir camera.. etc...
And also, im not good in electronics, i like to learn, but if i dont understand, then its not learning why and how its doing, hatever it should do, but if you only learn to replace parts, then its not learning to fix it, but learning to fix that problem.
Im out of ideas what and where to look. Point me, if i missed something. For just to throw parts on it, is not viable solution. i really want to understand what it should do and how its working.
In short:
Device is working fine! - but its not charging anymore!
Chargers are detected (all 4)
Batterys are detected (all 3: BATTERY 0 is 2.85V, BATTERY 1 is 10.5V, BATTERY 2 is 11.54V and if needed, i can charge them to 12V.. direct charging without balancer.)
Device is running on battery, but not charging it.(not in BIOS, not in device turned OFF, not in OS).
ALL MEASURED Voltages in 4 Groups:
XLSX (Excel file), in some reason PDF shows blank page... but if needed, i cand make "screenshot images"
https://docs.google.com/spreadsheets...f=true&sd=true
IS ACOK reversed? (so, its should be 0? or 3.33V?)
Based on BQ24707 diagram it can be both
Where that ACOK come? From chip?
I have done so many research, looked so many schematics and i found:
Acer Aspire V5-531 (v5 571) is based on BQ24707x
Lenovo B590-LB59A is also BQ24707x
and the "brotherland" DELL Inspiron 14 N4050 is also BQ24707x
NOTE: If those schematics are needed, then let me know!
My plan is to use "dead" motherboard parts.. (soldered CPU and microcracks on those, recycled boards.. etc...) i dont have new or other BQ24707 IC, but i have lots of BQ24735, can i use that? or i should not and use only BQ24707?
OR IC is alive, but i miss something?
BEST REGARD, Thomas
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