HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on

[SMDFlea]

Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on

+3V comes from PQ35 . Check that and PU6

[SMDFlea]

Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on

double post

[loser18]

Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on

+3V comes from PQ35 . Check that and PU6

Yeah, but +3V is suspend voltage & it should come only after MAINON & SUSON...

[SMDFlea]

Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on

Yeah, but +3V is suspend voltage & it should come only after MAINON & SUSON...

yes i know, last night you said you had 1.8V ,so i assumed you were testing pin 11 while switching on.

[loser18]

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...

[loser18]

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...

[SMDFlea]

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 .

[loser18]

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 .

Yes...Already did it...Also replaced SPI chip...Pls note that there's only one 4MB SPI on my mobo...

[Stevie2001]

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 way

[SMDFlea]

Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on

Yes...Already did it...Also replaced SPI chip...Pls note that there's only one 4MB SPI on my mobo...

Yes.. the EC ia at U11. Glad you got it fixed. For future reference the bq24725A is compatible with BQ24728 .

[loser18]

Re: HP 15-n027sa DA0U92MB6D0 not detecting charger / doesn't turn on

Yes.. the EC ia at U11. Glad you got it fixed. For future reference the bq24725A is compatible with BQ24728 .

It's not fixed yet...BIOS didn't help...Waiting for new IT8528E & will post results once replaced...

[loser18]

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....

[mcplslg123]

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.

[Stevie2001]

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.

When i ordered the first time i was looking at them code ignoring the ITExxxxxx and it works

[simo]

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....

Thanks a lot, you helped me to solve the same issue with the same symptoms

[incorrect]

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?

[mcplslg123]

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?

ITE8518-Non Programmable

[incorrect]

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.