HP DV6-3141se wont power up with charger

[sonunigam]

Hello all,
I'm in a trouble please help me to sort it out. . . I'm working on a HP DV6-31411se which is not turning on with charger but it is perfectly turning on with battery. . . I checked the motherboard number is DA0LX6MB6H1 REV : H.
When i check the VIN with connecting the charger. There are no voltages. I'm gonna upload the schematic diagram, please help me. . .

[sonunigam]

Re: HP DV6-3141se wont power up with charger

hello all,
I've already checked voltages on PQ42, No Voltage on Pin # 3, and Pin # 1 Present when i connect the charger.
But when i connect battery and check the voltages, there are 11 voltages on Pin # 4 and pin # 3 but no voltages on pin # 1. But with the battery laptop turning on perfectly. . .

[sonunigam]

Re: HP DV6-3141se wont power up with charger

PQ 42 is NIKOS P0603BDG. . . .

[polytek]

Re: HP DV6-3141se wont power up with charger

hi,
are you tried with another dc adaptor ?
it can be adaptor problem, check the Id signal is it correct ?

[FShahid]

Re: HP DV6-3141se wont power up with charger

Some newer DV series, ProBoook series and G series like G62 are picky about ac charger, they will not show any signs of power until you connect a genuine 90W charger. I would say to try different charger first.

[Levi]

Re: HP DV6-3141se wont power up with charger

Soninugum, check pd20 is 19v crosses, if not change it, nd check pc180 if it is shorted to ground. if u v got 19v on pc180 then i will suggest u change pq42, it could probably be opened.

[sonunigam]

Re: HP DV6-3141se wont power up with charger

Hey all,
I'm gonna attach an image in which i explained on a page number # 42. When i remove Resistor PR12 (100 Ohms), The voltages present on PQ42's Gate Pin #1 +VH28.. And voltages now present everywhere. But Laptop is not turning on still. But when i connect this resistor again there are no voltages......
Please let me know what should i do?
One more thing, i changed ENE KB3926QF D2.
But problem still exit.

[sonunigam]

Re: HP DV6-3141se wont power up with charger

The Image is here. Sorry i couldn't attach before.

[ktmmotocross]

Re: HP DV6-3141se wont power up with charger

i think u have shorted/bad pq4.

[sonunigam]

Re: HP DV6-3141se wont power up with charger

Hello KTMMotcross,
I've changed it already, But it is not faulty. . . .
any other suggestion????

[ktmmotocross]

Re: HP DV6-3141se wont power up with charger

so there must be something with its base signal. ACOK# must be 0V. check pq3, acok_in, acin

[sonunigam]

Re: HP DV6-3141se wont power up with charger

Hey Ktmmotocross,
I'm gonna sending you an attachment, Please check this.

[sonunigam]

Re: HP DV6-3141se wont power up with charger

One more thing, I've changed R5 because it was devalued, So i changed it with 100 Ohms the original one, but nothing happened positive.
Any help?

[ktmmotocross]

Re: HP DV6-3141se wont power up with charger

when connect charger pq3 must short that 8.9V to ground. chck for acokin and acin signals

[sonunigam]

Re: HP DV6-3141se wont power up with charger

Hello Ktmmotocross,
I've checked everything even every single component. But not successful. I've checked every single Resistor, Capacitor, Diode, Transistor, MOSFET. . . .
Any other help?????

[ktmmotocross]

Re: HP DV6-3141se wont power up with charger

check acok and acin signals. u must have signal on pq3 to short acok# to 0V

[sonunigam]

Re: HP DV6-3141se wont power up with charger

How to check those signals? Can u explain me????
Actually i'm really tired to check this one. But i've to solve it because this one is 3rd machine which has a same problem. . . .

[ktmmotocross]

Re: HP DV6-3141se wont power up with charger

measure its voltage to ground, with attached charger

[sonunigam]

Re: HP DV6-3141se wont power up with charger

i do't know what r u saying? If u send me any pic to check signal it would be great great support to me. . . .
Thanks a lot

[dycc]

Re: HP DV6-3141se wont power up with charger

Remove pq47 and plug laptop. If it turn on change pq47 . This mosfet have sometime something that i call gate issue . As it share the gate line (batdis_g) with pq42 it may block it.