HP Probook 6560B won't power on

[sonunigam]

Hello all,
I was just checking HP Probook 6560b. It was working fine but when i restarts it, It has a mysterious Problem. Now it is powering on, but no display and power off automatically. But after few seconds it starts automatically but there is no display again. And this process repeats time and again by itself.
I'm gonna attach some pics, it might helpful to understand. . .

[sonunigam]

Re: HP Probook 6560B won't power on

One more thing, When i checked voltages on BIOS, All 7 pins have 3.3 Volts and the pin number 8 is ground. . .

[atsio]

Re: HP Probook 6560B won't power on

One more thing, When i checked voltages on BIOS, All 7 pins have 3.3 Volts and the pin number 8 is ground. . .

Which IC?

[sonunigam]

Re: HP Probook 6560B won't power on

dear,
I'm talking about the voltages on BIOS ic?

[atsio]

Re: HP Probook 6560B won't power on

I understood that. I am asking for the model of BIOS IC.

[sonunigam]

Re: HP Probook 6560B won't power on

The situation is now HP probook 6560b is,
When i press the power button the JMB700 Card Reader ic is getting hot. and the motherboard restarts automatically.
I thought that the JMB700 is short that's why this ic is getting hot so i remove this ic.
Now the condition is Nothing is getting hot but the situation is same, No display and it restarts automatically. I changed the Processor too. But all is vain.

[imgaurav86]

Re: HP Probook 6560B won't power on

Check the voltages on all the inductors( processor, ram power) and see if any of them are missing when it turns on.

Unplug the memory and see if it stays on.

apply little pressure on PCH and see if that makes any difference.

[sonunigam]

Re: HP Probook 6560B won't power on

hello all,
Anyone can send me the schematic diagram of HP Probook 6560b?
I really need it.

[imgaurav86]

Re: HP Probook 6560B won't power on

attached

[dj_ricoh]

Re: HP Probook 6560B won't power on

Did you check for any bend pins in usb ot card reader?