Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

I have an Asus motherboard P3v4x, unfortunately one of the component is
burn.
The component is HIP 6013CB, it is right next to VIO jumper and the Fan
header.
Question: Anyone have done it before? Where can i buy the chip cheaply?
online or local?

See the picture
http://qcpages.qc.cuny.edu/~slee18/P3v4x/Burn1.JPG

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

In article <1124522279.865099.275170@g49g2000cwa.googlegroups.com>,
marslee@hotmail.com wrote:

> I have an Asus motherboard P3v4x, unfortunately one of the component is
> burn.
> The component is HIP 6013CB, it is right next to VIO jumper and the Fan
> header.
> Question: Anyone have done it before? Where can i buy the chip cheaply?
> online or local?
>
> See the picture
> http://qcpages.qc.cuny.edu/~slee18/P3v4x/Burn1.JPG

You can get one here for $2.72 . This is where I got a regulator to
replace the original on my P2B-S, so I could run a Tualatin with an
Upgradeware Slot-T.

http://www.newark.com/NewarkWebCom [...] search&y=7

The datasheet for the HIP6013CB is here.

http://www.intersil.com/data/fn/fn4325.pdf

My immediate concern, if I were you, is what caused the failure.
Looking at the pinout, and the burn mark in your picture,
either BOOT or UGATE pin failed. BOOT is for bootstrapping
the voltage used to drive the gate on the MOSFET. UGATE is
the actual signal driving the gate on the (upper) MOSFET.
(There is no lower MOSFET in this design - a Schottky diode
functions as the lower MOSFET, and is only a few percent less
efficient than a two MOSFET design.) My guess would be, the
gate input on the MOSFET is fried, and a large current is
being drawn from the HIP6013CB by the MOSFET. Perhaps using
an ohmmeter on the MOSFET, and checking for a short between
pins, could give you some info. (I don't see any signs of
burning on the MOSFET, suggesting its drain to source is still
intact. Just gate to drain or gate to source could be punched
through, by a gate failure.) I'm only guessing here. It could
also have been slow torture over the years that killed the 6013
- you'd need to Google to see if 6013 failures are a common
occurrence.

If you are going to attempt this repair, you would be well
advised to replace the MOSFET as well. Now, unlike the
regulator chip, the same MOSFET is not likely to be made
any more. It will require you to do a substitution, which
means finding a datasheet for the original, or using the
design info in the HIP6013CB datasheet to select one, then
shopping all the different MOSFET companies trying to match
the specs. I'm not good enough at this stuff to help you
on this, with any reasonable certainty of success.

If you can figure out who makes the MOSFET, International
Rectifier (IRF) has a crossreference web page here. You
can type in a part number and try and get a substitute
device. Then, search for that device on the Newark
web page, to get a price and availability info, as Newark
carries some IRF stuff.

http://ec.irf.com/v6/en/US/adirect/ir?cmd=NewCrossRef

For example, on my P2B-S motherboard, there was a MOSFET
with the letter H with a circle around it, as the logo.
This is Hitachi. The full part number was 2SK2885, but
the part itself only had the "2885" printed on it. It
took me the longest while to realize it needed 2SK to be
a complete part number. The next issue was, that Hitachi
had sold their MOSFET business to another company. In fact,
as of this date, it is no longer possible to find any data
for the part (I think I found a datasheet a couple years
ago, but the URL no longer works.)

Figuring this stuff out is not easy. Many of the MOSFET
makers have changed hands, some a couple of times. An
aged electronics person, with an arsenal of smelly old
databooks, is the kind of person for this substitution
job.

Good luck - you're going to need it :-)

Paul

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

http://search.ebay.com/p3v4x_W0QQf [...] turnedZ300

Might be cheaper (labor wise) to just grab a p3v4x off of e-bay.
Several at buy it now for $31.88 at the moment.

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

I agree. Boards are never fixed at the component level anymore. They are
thrown away and replaced.

-g