MSI K9N Platinum Vmods

[ozzimark]

well.. i spent a long time looking over this board trying to find a logical place for Vcore and Vddr mods.. and sadly couldn't locate much of use.

first chip i looked up turned out to be the vtt termination chip (tiny! :banana: ) next was a temperature sensor

there is an intersil ISL6566 near the PWMIC chips
http://www.intersil.com/data/fn/FN9178.pdf

but whatever is controlling the Vddr eludes me! :slap:

[neologan]

thought i'd ask here, where is the vcore measure point for a dmm on this board?

[elmor]

I'm in need of vdimm-mod for the K9N Neo-F, maybe same pwm? I get the board tomorrow so I will check then.

(I can't figure these things out myself, but if I find a mod for my board I'll post it here)

[persivore]

Can someone post some pictures of the board please.

[elmor]

They are different boards though, but I will try to take a few pics of mine when I recieve it tomorrow.

[Eldonko]

Can someone post some pictures of the board please.I have a few of vreg area, but got rid of the board so its all I can post. Note sure if they will help but here you go. :)

http://members.shaw.ca/Eldonko1/IMG_3709.jpg

Heres a higher res (http://members.shaw.ca/Eldonko1/IMG_3708.jpg)

[nn_step]

now this will come in handy :D

[NickS]

Oddly, that looks like the chip I was prodding with my DMM when I blew up my whole pc on my Neo4 Platinum.. so beware.

I accidentally moved and touched two pins together with the tip of my DMM, and lets just say I had about $500 worth of paperweights if not more..

[elmor]

My camera isn't at home today so no pics from me, but it's the same pwm on this board (ISL6566). We will need (atleast i do) alternative soldering points as this chip is really small.

[ozzimark]

hope this helps some.

http://www.eclipseoc.com/image/k9n/dimm.jpg
http://www.eclipseoc.com/image/k9n/dimm2.jpg
http://www.eclipseoc.com/image/k9n/wee-chip.jpg <--- no idea what this is, but i feel suspicious of it, since there is nothing else i can find that might be setting vdimm

took some voltage readings too. the little chip to the left of the choke is the vtt regulation:
http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83310DS_DG-A_05.pdf
http://www.eclipseoc.com/image/k9n/voltage1.jpg

and the other mosfets under the dimms. the one i note as being hot can break 85c at 2.45v. i normally have a heatsink on it. the other one must be HT link voltage
http://www.eclipseoc.com/image/k9n/voltage2.jpg

[ozzimark]

bump cause i'm back from vacation? :D

[persivore]

Can you get a clear photo of the small chip near the Vdimm sockets (marked MS-11 BCY03?). I can't find any information about the chip, but it looks like it could be controling Vdimm.

Also, is there any plastic/metal box soldered to the board saying 'MSI corecell' on top of it? I've seen MSI hide voltage regulators under those sometimes.

[ozzimark]

thanks for the reply :toast:

here's another shot of MS-11. i couldn't find anything on either :'(
http://www.eclipseoc.com/image/k9n/wee-chip2.jpg

there is a chip under core cell sink, but the sink is soldered down, gonna have to take apart the rig to get to that one. it's also relatively far away: under the 6 sata ports, so i have a feeling it's not doing anything to vdimm, though i could be mistaken. visually, it looks like ta tsop chip with.. i think 10 legs on each of the 4 sides.

[ozzimark]

all right. think i've figured it out. now i just have to figure out how to solder that small of an SMD pad... :lol2:

http://www.eclipseoc.com/image/k9n/wee-chip3.jpg