hp Stream ( No 19v on power supplies )

[garrymc123]

Hi got this hp laptop in for repair on inspection when u plug in the charger the white light next to charger port lights up thats it on inspection of the mother board i have no voltages on any power supplies i only have power at the first mosfet and i think its a diode next to it on one side i have attached a pic with the voltages .Any idea where to go next with this motherboard .

Thanks Guys

[Techtiger]

Re: hp Stream ( No 19v on power supplies )

check the voltage PU6 pin 1 3 20 19 23 24
Voltage PU5 pin 6

[garrymc123]

Re: hp Stream ( No 19v on power supplies )

Thanks, techtiger but I'm kinda lost according to the schematic pu6 should be ISL6251A but on the board its a OZ8691LN and I can't find anything on it will I still take the measurements from the same pins. Thanks

[on/off]

Re: hp Stream ( No 19v on power supplies )

I believe your motherboard wasn't Quanta AX3/AX5, since no PCB marking or labeling for component on whole board. So definetely newer Quanta's motherboard, try search Code of mobo near RAM socket.

[garrymc123]

Re: hp Stream ( No 19v on power supplies )

Cheers on/off i think i have found it TPT MV-0 20 E88441 this more like it

Thanks

[SMDFlea]

Re: hp Stream ( No 19v on power supplies )

Cheers on/off i think i have found it TPT MV-0 20 E88441 this more like it

Thanks

No thats not it .

[on/off]

Re: hp Stream ( No 19v on power supplies )

Check this link:
https://www.badcaps.net/forum/showpo...43&postcount=3

[garrymc123]

Re: hp Stream ( No 19v on power supplies )

Hi guys Downloaded the boardview but i can't find pu6 on this boardview and also the boardview is different from the motherboard layout. Thanks

[SMDFlea]

Re: hp Stream ( No 19v on power supplies )

Try to find the board id it will be similar to DA0Y0AMBC60

HP Stream 11-d: - Quanta Y0A
HP Stream 13-c: - Quanta Y0B
HP Stream 14-z: - Quanta Y08

[garrymc123]

Re: hp Stream ( No 19v on power supplies )

Found it

[on/off]

Re: hp Stream ( No 19v on power supplies )

Sadly, seem the bv doesn't match. Use schematic just as reference.

Charging chips should be PU4 OZ8691ALN page30

[SMDFlea]

Re: hp Stream ( No 19v on power supplies )

It could be this boardview http://sualaptop365.edu.vn/threads/b...bc-mb-c.19656/

[piernov]

Re: hp Stream ( No 19v on power supplies )

You mean this one? http://sualaptop365.edu.vn/threads/b...0b-mb-b.19655/

[on/off]

Re: hp Stream ( No 19v on power supplies )

You mean this one? http://sualaptop365.edu.vn/threads/b...0b-mb-b.19655/

Thanks, I think this the correct one. Also the BV seem match, only sub board give us confuse, because the layout BV was put together between mainboard with sub board, I think.
https://www.badcaps.net/forum/showthread.php?t=75275

[garrymc123]

Re: hp Stream ( No 19v on power supplies )

Cheers guys downloaded the files will i still check the same pins on OZ8691LN charging ic

[garrymc123]

Re: hp Stream ( No 19v on power supplies )

Right guys i can't find the datasheet for oz8691ln i was using the schematic but its a oz8691aln on it and it has 10 pins on the left side but on the schematic it has 9 so i don't know where pin 3 is but for the rest

pin 1 iout =19.73
pin 3 ?
pin 19/20 on same pad vbat = 0.352
pin 24/25 vsys on same pad = vsys = 19.72

[garrymc123]

Re: hp Stream ( No 19v on power supplies )

Also on vcc pin 9 on RT8172A CPU/GPU Core Power Supply i have no power but i do get charging light on power adapter connector

[Techtiger]

Re: hp Stream ( No 19v on power supplies )

Pin 11 to 15 is your 19V in pins for the Chip, test pin 10 2 3 37 40 36

[garrymc123]

Re: hp Stream ( No 19v on power supplies )

OK here are the voltages for those pins on oz8691ln

10- pa = 5.804v
2- acm = 0.380v
3 - acp = 0.00v
37 - addiv = 3.320v
40 - vac = 2.583v
36 - acav = 0.001v

Thanks for the help much appreciated

[garrymc123]

Re: hp Stream ( No 19v on power supplies )

Anyone ? are these voltages ok or can someone tell me what the abbreviations stand for ie (acp ) and i'll try and find out...Thanks