HP Pavilion DV4 turns off around 6 o 7 seconds.

[orientalsniper]

Laptop usually powered off by itself previously after about an hour of use, then I took it apart to take off the dust. Now it doesn't even work at all, it powers for about 6 or 7 seconds then shuts off.

Teach me your ways.

[Lumberjack777]

Re: HP Pavilion DV4 turns off around 6 o 7 seconds.

Laptop usually powered off by itself previously after about an hour of use, then I took it apart to take off the dust. Now it doesn't even work at all, it powers for about 6 or 7 seconds then shuts off.

Teach me your ways.

It's probably the CPU overheating then shutting down after a few seconds.

Common causes are...

1. Forgot to plug the fan back in

2. Too much thermal paste

3. The heat sink isn't laying flat on the CPU

[orientalsniper]

Re: HP Pavilion DV4 turns off around 6 o 7 seconds.

I discarded the processor being the problem, I tested it with two other processors. And it doesn't output any video signal (external & internal).

1) Fan is plugged.
2) Paste is ok.
3) The screws are turned tight shut.

[Tuomo]

Re: HP Pavilion DV4 turns off around 6 o 7 seconds.

I discarded the processor being the problem, I tested it with two other processors. And it doesn't output any video signal (external & internal).

1) Fan is plugged.
2) Paste is ok.
3) The screws are turned tight shut.

Feel gently circuits if you can find the circuit which heats up, it may be faulty.

[orientalsniper]

Re: HP Pavilion DV4 turns off around 6 o 7 seconds.

So, touch with my bare hands the whole motherboard while it's powering on?

[Tuomo]

Re: HP Pavilion DV4 turns off around 6 o 7 seconds.

So, touch with my bare hands the whole motherboard while it's powering on?

Touch finger, be careful and not burn your fingers.

[orientalsniper]

Re: HP Pavilion DV4 turns off around 6 o 7 seconds.

Cold as a dead ass turkey

[Tuomo]

Re: HP Pavilion DV4 turns off around 6 o 7 seconds.

Cold as a dead ass turkey

Ok. You need schematic and measure if there is short circuit somewhere.

[orientalsniper]

Re: HP Pavilion DV4 turns off around 6 o 7 seconds.

Board is a JBL20 LA-4111P Rev. 1.0

I found this http://www.scribd.com/doc/80044854/H...-Jbl20-Rev-0-4

But I don't have any idea how to measure for short, can you give me a link for beginners?

[Tuomo]

Re: HP Pavilion DV4 turns off around 6 o 7 seconds.

Board is a JBL20 LA-4111P Rev. 1.0

I found this http://www.scribd.com/doc/80044854/H...-Jbl20-Rev-0-4

But I don't have any idea how to measure for short, can you give me a link for beginners?

I think you find advice from youtube.

Put black probe to ground and red probe to coil if resistance is low check componet around this area.

There is very low resistance to GPU and CPU so remove CPU before measure resistance.

[orientalsniper]

Re: HP Pavilion DV4 turns off around 6 o 7 seconds.

I think you find advice from youtube.

Put black probe to ground and red probe to coil if resistance is low check componet around this area.

There is very low resistance to GPU and CPU so remove CPU before measure resistance.

I have no idea how to do that, I've got an analogue multimeter, is there any video that might help me in Youtube?

[Tuomo]

Re: HP Pavilion DV4 turns off around 6 o 7 seconds.

I have no idea how to do that, I've got an analogue multimeter, is there any video that might help me in Youtube?

Just cheked, and there seems to be very good videos.

Put searching world "Laptop chip level repairing"