Hp G61 Power Light goes off after 5 seconds

[rmps]

Hi guys..

The power light of this notebook goes out after 5 seconds.
Already replaced ISL6251 and PQ6/PQ4 fet´s..

I´m out of ideias.. Anyone helps?

Thanks in advance

[Learn2Day]

Re: Hp G61 Power Light goes off after 5 seconds

Have you already reflowed the GPU? In a HP I'd start there.

[rmps]

Re: Hp G61 Power Light goes off after 5 seconds

I didnt reflowed the GPU yet.. But i can do a reball..

But there´s another issue..

With the ac adapter plugged in i get 0.63v on pin1 of pq4/pq6, but if i plug the adapter off and measure again very quickly i get 5v dropping to 0 very slowly...

That´s odd isn´t it? :/

[Learn2Day]

Re: Hp G61 Power Light goes off after 5 seconds

How about on battery? Do you see the issue?
To be honest I'm quite new and inexperienced in troubleshooting boards and I didn't even looked at the schematics, I just mentioned the GPU because it happens so many times. But if you detect an issue in power circuit I'm probably wrong.

Cheers, L2D.

[Momad]

Re: Hp G61 Power Light goes off after 5 seconds

Hi all! I have the same notebook with the same issue, the power light, Wifi, caps Lock and the fan goes out after 10 seconds.
I have already reflow Gpu, BGA, no change.
I tried to connect the DVD driver, HDD and press the touch pad botton for verify them sockets and controllers, all leds light for 10 seconds.

[spidey]

Re: Hp G61 Power Light goes off after 5 seconds

first of all, you should flash main bios and EC. Also check your adapters data pin in the middle of the socket. Check standby voltages.

[rmps]

Re: Hp G61 Power Light goes off after 5 seconds

Already tested with another AC adapter.. Notebook doesn´t turn on. Only power light on and off after 5 sec. No other lights at all.. :/

[jtamad44]

Re: Hp G61 Power Light goes off after 5 seconds

bois problem..

[Momad]

Re: Hp G61 Power Light goes off after 5 seconds

Check Flat cable of Power Botton, and his socket, voltage at pins.
I have take out the CPU and try, i get one flash led at all leds, becouse no CPU.

[masud]

Re: Hp G61 Power Light goes off after 5 seconds

bios problem

[RJARRRPCGP]

Re: Hp G61 Power Light goes off after 5 seconds

Likely heatsink, because it's an HP.

Possibly a stuck CPU fan.

[bluestone]

Re: Hp G61 Power Light goes off after 5 seconds

I have solved this problem before and it was a bios problem, try to flash the bios using the usb method if it doesn't work then you should replace your bios chip.

[rmps]

Re: Hp G61 Power Light goes off after 5 seconds

It was in fact the bios chip. Replaced and it works fine.

Problem solved!

Thank you all for the help guys..

Regards

[dj_ricoh]

Re: Hp G61 Power Light goes off after 5 seconds

It was in fact the bios chip. Replaced and it works fine.

Problem solved!

Thank you all for the help guys..

Regards

how did you come to that conclusion?
did you try to reprogram and could not write on chip?

can you write on a bios chip?
can a bios be bad even if you can write on it?

[jtamad44]

Re: Hp G61 Power Light goes off after 5 seconds

It was in fact the bios chip. Replaced and it works fine.

Problem solved!

Thank you all for the help guys..

Regards

if the chip burn or does not have the 3.3v on the other legs, its ok to change it.

The question is, why did you change it?