Re: Bad BIOS Flash P5B-Plus

On Thu, 29 Nov 2007 23:17:15 -0500, daytripper <day_trippr@xxxxxxxxxxxxxxx>
wrote:

On Thu, 29 Nov 2007 19:54:22 -0800, "Kent_Diego" <None@xxxxxx> wrote:

I was hoping to see a BIOS chip socket but no luck! Not sure which chip. I
can do simple soldering but the chips on the motherboard have very small
leads. There is no way I going to get the chip out. I am hoping option 3
below involves sending the entire motherboard back to ASUS for repair.
...

OK, I am sure is see the EEPROM chip. It is a little 8-pin DIP between the
ICH8R southbridge and the last PCI slot. It has part number X80VIG and seems
to have marker ink X or A written across top. It has an undocumented 7-pin
connector by it labled J1_SPI. I guess a small 8-pin chip could be within my
soldering abilities. I seem to recall even old cheap motherboards had
sockets for the EEPROM chip. I wish the ASUS would have indicated the chip
location in the manual. Maybe I can get out of this for $5.00 I will keep
everyone posted to progress.

That isn't the bios eeprom, it's probably the serial eeprom for the ICH chip
and probably contains the mac address for the embedded lan controller.

Look for something with a lot more pins - like in the 40-48 pin range...

/daytripper

Well, it wouldn't be the first time, but I could be wrong ;-)
Asus may well have used a serial eeprom for the bios, because I'm looking at a
photo allegedly of a p5b-plus and I don't see anything that looks like a
traditional smt flash device...

But, somewhere on the board there's going to be another serial eeprom for the
lan mac address, so be careful you're not removing the wrong device...

/daytripper
.

Relevant Pages

  • Re: Troubleshooting MB and CPU
    ... I have another P4800-E Deluxe MB with a P43.0 chip. ... The BIOS shows that the cpu fan is running as ... computer - not elsewhere) is defective or motherboard semiconductors ... temperature monitor may be useful. ...
    (alt.comp.periphs.mainboard.asus)
  • Re: TEC and current driver chips for laser?
    ... heat to be conducted into a copper pour plane. ... some pins of the device before soldering the ground connection from the ... don't involve the chip getting warm to the touch. ... I would bet AD has burn in data to show their design is good. ...
    (sci.electronics.design)
  • Re: TEC and current driver chips for laser?
    ... heat to be conducted into a copper pour plane. ... some pins of the device before soldering the ground connection from the ... don't involve the chip getting warm to the touch. ... The more flex you design in the faster fatigue can set in. ...
    (sci.electronics.design)
  • Re: Processor Speed
    ... > Keith wrote: ... > motherboard than one currently gets when mounting the motherboard ... >> power density isn't infinite. ... The heat still has to get off the chip. ...
    (comp.sys.ibm.pc.hardware.chips)
  • Re: P4C800-E Deluxe USB Problem ?
    ... Got the replacement motherboard but its a P4P800E-DLX v 1.02. ... to connect the drive to two USB sockets. ... the battery as well (although the odds of the battery being able to ... chip returning to the cool state, so it won't get hot again. ...
    (alt.comp.periphs.mainboard.asus)