HP Probook 640 G2 dead

[shybear]

Re: HP Probook 640 G2 dead

hi, following voltage Pad list of Rockton I get this values:
Pad 60800 has 1v. 0v
Pad 60810 has 20v. OK
Pad 60500 has 0v. OK
Pad 60510 has 20v. OK
Pad 61410 has 20v. OK
Pad 61400 has 0v. OK
Pad 60010 has 20v. OK
Pad 60011 has 20v. (maybe Pad 60010)
Pad 66310 has 20v. OK
Pad 66010 has 20v. OK
Pad 66610 has 20v. OK
On flip side of board:
Pad 1411 has 3.3v. 0v
Pad 7100 has 1v. 0v
Pad 4500 has 1v. 0v
Pad 300 has 3.3v. 0v
Pad 310 has 0v. OK
Pad 7005 has 5.25v. 0v
Pad 7004 has 0v. OK
Pad 7002 has 0v. OK
Pad 7001 has 3.3v. 0v
Pad 7000 has 3.3v. 0v
Pad 7003 has 5.25v. OK
Pad 60210 has 20v. OK
Pad 60200 has 5.25v. OK
Pad 60110 has 5.25v. OK
Pad 60310 has 20v OK
Pad RTC60100 has 3.3v. 0v

Laptop current its 0A so there is nothing that burn and without schematic its not easy to find out why I don't have 3.3V.

Near Pad 60800 (see picture) there a group of 5 capacitors and resistance between pins its 0, instead others near CPU that are around ohms.

I removed alls capacitors but are all fine and anyway without there is still shorts.
Then I applied a limited voltage (less then 1V) at this points and I pulled out a bit of current that increase because of shorts but nothing get warm even if I tested with an infrared thermometer.

Any idea of could I check?
BTW I don't think its a BIOS issue.

[mnaeempn]

Re: HP Probook 640 G2 dead

Sir i have dead board 640 g2 problem is i have explained in picutre you can understand better also power button volt 3.3 present
no have schematic so i have no idea plz anybody help me in this situation

[EleganceArog]

Re: HP Probook 640 G2 dead

Hi Guys,

I don't know that might help. I got a customer with dead HP 640 G2, no light, no display, nothing.

Did some research I found out this model has a cap that always got bad.

Check my video
https://youtu.be/Da1QyXCuDmY

Hope that will help someone.

[marcoopolo]

Re: HP Probook 640 G2 dead

Hi Guys,

I don't know that might help. I got a customer with dead HP 640 G2, no light, no display, nothing.

Did some research I found out this model has a cap that always got bad.

Check my video
https://youtu.be/Da1QyXCuDmY

Hope that will help someone.

thanks very much