Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on
+3V comes from PQ35 . Check that and PU6
+3V comes from PQ35 . Check that and PU6
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Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on
double postComment
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Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on
OK...
So I've phoned my customer to ask him how did this happen. He said it was caused by faulty adapter (broken cable). I've immediately checked AD_ID & it reads only 1V...Also EC8 was blown, but it's been replaced...Does anyone know if the 1V on AD_ID is correct voltage? I think it should be around 7-8 volts...Comment
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Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on
Yep, the correct voltage should be around 0.75V...I think 19V has been pumped in to AD_ID rail & it fried U14(KBC)...Will update once replaced...Comment
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Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on
yes its 0.75v as you found out. https://www.elvikom.pl/hp-15-n027sa-...on-t53186.html
Do you have a programmer to flash the KBC dump .Comment
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Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on
Stick to basic use dc power supply to power the board fix it from thier. Once the board is fix turn your self towards adapter save tkme that wayComment
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Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on
OK guys...
It's been a long time. The laptop is fixed now. I've replaced KBC & everything is working as it should be, however I've had some problems, which I'll explain below.
#1 Heads up:
My original KBC / IO chip was IT8528E EXS . I've ordered AXS & after replacement laptop was completely dead (not even 3 blinks on charging LED). I was never ever thinking the last 3 digits/numbers would make any difference (datasheet also describe them only as a "TRACKING CODE") but after digging some forums I've found out it's actually firmware number as well. Ordered IT8528E EXS & laptop seemed to be completely fixed. So just to let you know, next time you'll be replacing IT8528E or any IT KBC, buy the same "TRACKING CODE"
#2 Heads up:
After the KBC replacement & windows installation everything was working OK except battery charging. When I've started it, BIOS reported straight away the battery needs to be replaced,press enter, blah blah. First I thought my soldering job with KBC was not 100% & MBCLK data is not communicating properly (because I knew battery is OK), however that was not the case. The problem was I've tried another BIOS dumps, but once It's been re-flashed back to my original dump, battery is charging & also reporting OK. So just to let you know again, use your own dump if possible or it may be dependant on DMI information. Not sure.
Anyway...Thanks to you all mates...I hope this info will help to anyone with quanta U92 mobo....Attached FilesComment
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Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on
The info about suffix AXS and EXS being not compatible is a lesson for all of us. thanks for updating us.Comment
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Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on
so,back to this thread,i have the same issue.
but my kbc is ITE 8518E. is this kbc programmable or not?Comment
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Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on
the same source says that ITE8528E is not programmable aswell but this thread says the opposite.Comment
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I have Latitude 5420 that it's working fine on battery but when it's plugged on USB C charger it wont turn on.
Battery is charging fine. Also, if I connect the charger while laptop is on, everything is fine, it will charge.
The same thing if I connect to other USB C port.
Charger is OEM -
I have a similar problem... I got an old MBP for free, but wont turn on... Only green light on charger. I measured these voltages. If i try to do an smc reset using keyboard, nothings happen, wont go out the green led. I dont know how to continue, please help me.
SMBUS_SMC_BSA_SCL 3.5V
SMBUS_SMC_BSA_SDA 3.5V
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Hello.
Have this HP 650 G1 that works ONLY when battery first and then attach charger. otherwise it not work with charger or battery only.
i cannot fing what is wrong with it. ACDET - ok, ADP_A_ID - 3.3V ACPRESS, Mosfets looks ok. even when working board dont see battery . data link on battery is ok 3.3V
this charging circuit is hard. anybody knows what to measure?
HP 650 G1
6050A2566401-MB-A04
sn - 5CG52238HF... -
Hello, i have some issues with my laptop Lenovo Y700-17ISK (motherboard BY511 NM-A541), it started when i turn on the laptop, but the lcd wont turn on, i then connected it via hdmi to tv and screen was ok. So i thought maybe lcd stripe is faulty, i removed the bottom cover, disconnected main battery, reset the cmos by disconnecting battery for 1 min, then slighty move the lcd stripe. Conncted power supply and tuned on my laptop, the lcd turn on, it started to load os, then it turn off, after a second it turn on, then after like 3 seconds turn off again, and so on. Removed power supply, waited... -
ISL6257HRZ ISL6257HRZ-T Laptop Battery Charger Datasheet
Highly Integrated Narrow VDC Battery Charger for Notebook Computers
The ISL6257HRZ ISL6257HRZ-T is a highly integrated battery charger controller
for Li-Ion/Li-Ion polymer batteries. ISL6257 is designed for
Narrow VDC applications where the system power source is
either the battery pack or the regulated output of the charger.
This makes the max voltage to the system equal to the max
battery voltage instead of the max adapter voltage. Operating
at lower system voltage can improve...11-05-2024, 04:43 PM
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