Question about ASUS Intel 845 Chipset P4B (P4B WOA) Motherboard

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Wiring diagram Do you have or can you email me a wiring diagram for a P4B 478 socket motherboard. Not sure which way to place power switch,reset switch. Thanks Monte

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No display.and some time os become cruppt

Posted on Sep 22, 2008

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Posted on Sep 01, 2008

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Hp dv4 power supply diagram


Power Supply is the AC adapter (Charger), the DC Power Jack harness it plugs into in the laptop, and a power sensor chipset, or chipsets, on the motherboard.

[ Chip and Chipset are slang terms for I.C.
Integrated Circuit,

http://en.wikipedia.org/wiki/Integrated_Circuit ]

As for a diagram of how the Power circuit runs on the motherboard, it isn't available to the general public. It is part of HP's, and/or the motherboard manufacturer's, design patent.

All I can state, is that you may want to check out the continuity, of the DC Power Jack harness. (Ohms check of each individual wire)
See if it is good. Also make sure it it plugged in tightly to the motherboard.

Past this point it's check out the motherboard with a dual trace oscilloscope. Trace the power circuit down to see where the problem is.

Bad power sensor chipset? Usual repair is to just replace the motherboard. Cost, and obtain ability of procuring the chipset, plus technique, and tools involved, justifies replacing the motherboard, and not trying to replace just the chipset.

The chipset is mounted to the motherboard via a BGA Surface mount.

BGA Surface mount:
Compare to an older Intel Pentium 4 processor, that uses a Socket 478 processor socket.
The bottom of the Processor chipset has contact pins. 478 of them.
The processor socket has matching socket holes. 478 of them.

With a BGA Surface mount, there are no contact pins, nor matching socket holes.
Solder Balls take the place of the contact pins on the chipset.
Copper Pads take the place of the socket holes on the motherboard.

The chipset is set into place over the motherboard, with the Solder Balls lining up on the Copper Pads.
The chipset is set down into place, and heat is applied.

Heat is applied at a specific temperature, and for a specific amount of time. The solder balls melt, which solders the chipset to the copper pads. (Which in turn solders the chipset to the motherboard)

To replace, a BGA Rework Machine should be used. Not something everyone has laying around. Read - Expensive.
Therefore repair is expensive.

Justifies motherboard replacement.

http://www.insidemylaptop.com/disassemble-hp-pavilion-dv4-laptop/

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-compaqhp

HP Pavilion and blue - dv4

For additional questions please post in a Comment.
I would like to know what specific problem you are having, also.

Regards,
joecoolvette

Jan 04, 2012 | HP Computers & Internet

1 Answer

Hi Expert, I am switching Foxconn 661M03-G-6L from my old PC casing to a new casing but forgot to lable the pin connections for the following: Power Switch, Power LED, HDD LED, Reset Switch and Speakers ...


You need the manual which you can get here for your board, and download it at the bottom of the page, once you have the manual, then you should see the connections. The other way to tell is to look closely on the board, it might say which goes where right by the connection on the board, and then the wires should say on them what they are, and you can put them where the board says, if you have that on your board.



http://www.foxconnsupport.com/download.aspx?models=en-us0000280&category=C000000001&series=en-us0000001&keywords=&sort=Motherboard%20Manual

Dec 01, 2010 | Foxconn 661M03-G-6L P4 Socket 478/SiS...

1 Answer

Plz showl my pc problem


here is the download link

select category MotherBoard
Socket :478
Select U r mother Board Model and download drivers

http://support.asus.com/download/download.aspx?SLanguage=en-us

Jul 06, 2009 | ASUS Intel 845 Chipset P4B (P4B WOA)...

2 Answers

Graphics card problem


Your motherboard uses AGP for graphics card. Here's a link for full specs:

http://www.dealtime.com/xPF-Intel-Asus-P4B-M-Pentium-4-Socket-478-Intel-845-Motherboard-P4B-M

Jun 10, 2009 | ASUS Intel 845 Chipset P4B (P4B WOA)...

1 Answer

Need manual or wiring diagram for this motherboard, thanks


Hello sir, I search for you and found a manual. Hope it is useful.You can see the wiring and everything. http://www.fixya.com/support/p362922-asus_p4sdx_motherboard/manual-11143

May 06, 2009 | Computers & Internet

1 Answer

I need to know front panel pinout values for IBM NetVista 49P15


THE VENDOR HAS THE PIN LAYOUT AND SOME OF THE PLACE WHERE YOU DO BUSINESS WILL HELP WITH GETTING YOU THE DIAGRAM PAPER WORK.

ROD

Feb 16, 2009 | IBM (33P0825) Motherboard

1 Answer

Iam facing sound problem on my pc


http://support.asus.com/download/download.aspx?SLanguage=en-us

fill in boxes in the middle ; type motherboard, socket 478, P4B, press search, popup select your OS, only one option for audio pops up, dl that and install.

Dec 02, 2008 | ASUS Intel 845 Chipset P4B (P4B WOA)...

3 Answers

Motherboard replacement


Yes, but will work only if you put a right cpu processor (FSB).
Because you have different FSB (533in one and 400 in another)
Both are socket 478, same AGP slot 4x

Oct 09, 2008 | Computers & Internet

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