PM_I_hpc_s mv_mb_v3

[spidey]

with battery it starts wit blank screen, no post. But with adapter not triggering. i'm taking out the mobo now. Hp G62.

[spidey]

hmm, its not working with adapter, because my adjustble dc voltage regulator is not supported by the system of this hp g62. it works with its own charger. So i think next i'll re-programme the bios.

[Francisco.s]

Originally Posted by spidey

because my adjustble dc voltage regulator is not supported by the system of this hp g62. it works with its own charger. So i think next i'll re-programme the bios.

Hi spidey, could you explain in a better way?.
Regards.

[spidey]

some hp laptops doesnt work with 2 pin adapter. so if you want it to work with 2 pin adapter, like mine you need to do some modification. you may try connecting 3th pin to gnd. i havent found the schem. yet. there is a problem in vcore power circuit. Cpu is overheating too much. i think cpu 's allready dead so i decided to give it bck to customer.

[Francisco.s]

Originally Posted by spidey

some hp laptops doesnt work with 2 pin adapter. so if you want it to work with 2 pin adapter, like mine you need to do some modification. you may try connecting 3th pin to gnd. i havent found the schem. yet. there is a problem in vcore power circuit. Cpu is overheating too much. i think cpu 's allready dead so i decided to give it bck to customer.

PM_I_hpc_s mv_mb_v3 = Foxconn Federer, if you want it, I have the schematic.
Regards.

[spidey]

it would be great. thanks. you can give a link or i'll give my mail to you via pm.

[Francisco.s]

Originally Posted by spidey

it would be great. Thanks. You can give a link or i'll give my mail to you via pm.

hp_g62_compaq_cq62_foxconn_star_federer_rev_1.0_sch.pdf

[spidey]

Originally Posted by Francisco.s

Attachment 57681

thank you very much..

[Francisco.s]

Originally Posted by spidey

some hp laptops doesnt work with 2 pin adapter. so if you want it to work with 2 pin adapter, like mine you need to do some modification. you may try connecting 3th pin to gnd. i havent found the schem. yet. there is a problem in vcore power circuit. Cpu is overheating too much. i think cpu 's allready dead so i decided to give it bck to customer.

Hi spidey, I am very interested in your modification for 2 pin adapter. Is it possible for you to show how to do it over the schematic?
Regards.

[tomodachi]

Hi,

Mine was shut down yesterday due to overheating but mine had too much dirt in cooling fan. Now it has 3.3V on power button but no power on SPI flash, I m very confused,
I need a hand for this motherboard.

[whaldsz]

You're probably looking at BIOS ROM (page 13) and not KBC ROM (page 25).

[tomodachi]

Originally Posted by whaldsz

You're probably looking at BIOS ROM (page 13) and not KBC ROM (page 25).

Yes, BIOS rom has no voltage but KBC rom has 3.3V.
I guess I need dump for KBC rom because KBC doesn't power up the system.

[whaldsz]

Right.

[mohamed.mostafa]

give the model g62-***** so i can share the EC dump file.

[tomodachi]

Originally Posted by mohamed.mostafa

give the model g62-***** so i can share the EC dump file.

sorry I'm late, G62-B11ET

[tomodachi]

Update : I get not light on ac connectors led with adapter but when I use battery I see led blinks 3 times indicating me battery is empty.
does it mean charger (8731AE) is gone ? some help would be great.
schematic is here;

[whaldsz]

3 blinks is memory, i think.

[tomodachi]

Originally Posted by whaldsz

3 blinks is memory, i think.

Nope, today I fixed it changing 8731AE charger and it worked!
Problem description;

When plug AC adapter no power no blink but when plug a charged battery motherboard powers on. MAX8731AE have a circuit for switching between AC power and battery and it was broken.

[highpulse]

I've got the same problem , g62 , i got the 3.3 volts on the main DCDC converter , getting 3.30 volts on on off button and drop to 0 when pressed ,cheked coild for dc output , i dont get 5 volts , and there is no short to the ground , cheking fet coils and caps after main dcdc , all are in shape .. simply dont notice light on the dc jack .. , could this be a bios problem ? main dc was changed and do the same thing . and also i dont get voltage on the bios IC

[highpulse]

also i dont get VCC +3.3S on the KB , also notice i should have on pin 33 of ITEkb , and ther eis no voltage there , as also there is no rsmrst as well ..i got some 3alw voltages on KB , but not main vcc