Which nVidia mobo chipsets are bad?

[gixie]

Re: Which nVidia mobo chipsets are bad?

I indicated with an arrow what needs to be replaced. Please confirm that they are all 8mm in width. They should be either 16V 1000uF or 6.3V 1500uF.

For the 16V 1000uF:
http://www.mouser.com/ProductDetail/...E4E2mSMph7c%3d

For the 6.3V 1500uF:
http://www.mouser.com/ProductDetail/...LJ%252bKVJk%3d

Hi mockingbird,
Thanks for the reply (actually thanks to everybody that replied to my post...
There's a place between the VR and the CPU where it looks like there's 1 missing capacitor... I remember reading somewhere (just brew it was the poster, I think) that it would not hurt putting a cap there too...
What do you think?
Is the website you suggested good (i'm referring actually to shipping; oh, btw, I'm Canadian)? I usually buy from ebay.
Thanks in advance!

[delaware74b]

Re: Which nVidia mobo chipsets are bad?

gixie - 3-in-1 oil is a brand name of lightweight oil sold in the US. Here is the link to their page:

http://www.3inone.com/products/multi-purpose/

[gixie]

Re: Which nVidia mobo chipsets are bad?

gixie - 3-in-1 oil is a brand name of lightweight oil sold in the US. Here is the link to their page:

http://www.3inone.com/products/multi-purpose/

Hi,
Thanks for the reply
Yeah, I imagined that much... I am Canadian, so I am wondering what my options are here... I think Jig-a-loo is one, the second being the usual lubricating oil (like the one used to lubricate sewing machines).
What do you think?
Thanks again!

[mockingbird]

Re: Which nVidia mobo chipsets are bad?

Hi mockingbird,
Thanks for the reply (actually thanks to everybody that replied to my post...
There's a place between the VR and the CPU where it looks like there's 1 missing capacitor... I remember reading somewhere (just brew it was the poster, I think) that it would not hurt putting a cap there too...
What do you think?
Is the website you suggested good (i'm referring actually to shipping; oh, btw, I'm Canadian)? I usually buy from ebay.
Thanks in advance!

Canadian? Oh well, it's not your fault.

No, don't add anything. As my father always tells me "Don't make a doctorate out of it".

Regarding Mouser's shipping:
You have to specify USPS shipping and not UPS shipping. The USPS shipping is only $8 to Canada but there is a risk that it will get stuck at the border and it will take a week to get to you. I had no problems with it though.

I would love to make a group buy at Newark with other Canadians on this forum. Their shipping is outrageous ($20), but I really need some 10mm Panasonic FK caps.

[Pyr0Beast]

Re: Which nVidia mobo chipsets are bad?

^ those stupid fans killed a lot of those A8N series boards.
i've seen tons of them where the fan was seized solid or just barely moved..

chipset runs at 90+°C if the fan fails.. kills the chip pretty quickly

And if you try to remove it, to put some oil on it... bummer, have to remove the whole fan assembly from the bottom !
Then unscrew the top and only then get to the fan !!

I was so pissed, had to remove the whole board to get there ...

[Uranium-235]

Re: Which nVidia mobo chipsets are bad?

my boss takes the dv's apart, puts tin foil across everything but the gpu die itself, then takes a small blowtorch and quickly drags the flame across the gpu die. then artic silvers a copper shim in place of the heatpad, and then silvers the shim to the gpu. it works, for a few days

[Pyr0Beast]

Re: Which nVidia mobo chipsets are bad?

A shitty repair IMHO

[gixie]

Re: Which nVidia mobo chipsets are bad?

@ mockingbird
I just received part of the caps for this repair, the ones around the cpu and VR.
I bought them off ebay and they are Philips, 10mm. I chose them because they were the cheapest and you know, in case the mobo has another defect I did not want to lose to much $.
I read that you wanted to buy Philips caps off Newark...Why don't you try ebay? I admit, it takes waaaay longer to get them, but...I think shipping was free for me.
Just my 50 cents!

[Scenic]

Re: Which nVidia mobo chipsets are bad?

philips doesn't make low-ESR caps suitable for motherboard use..

[gixie]

Re: Which nVidia mobo chipsets are bad?

@Scenic
That's weird...there are a lot of caps on the same mobo that are made by Philips, and there was a comment that said they are reliable... What gives?
Should I order Rubycons or should I give it a try...

[mockingbird]

Re: Which nVidia mobo chipsets are bad?

Gixie,

Are you sure you have Phillips caps? Maybe you're refering to Sanyo or Panasonic?

[gixie]

Re: Which nVidia mobo chipsets are bad?

I am sorry all of you...they're Panasonic...

[gixie]

Re: Which nVidia mobo chipsets are bad?

So, are Panasonic good?
I would hate it if they weren't

[Scenic]

Re: Which nVidia mobo chipsets are bad?

depends on the series.
panasonic/matsushita caps in general are great, but if the series aren't suitable for motherboard use, it's not gonna work out..
FM, FL and FJ would be what you're looking for..

[PCBONEZ]

Re: Which nVidia mobo chipsets are bad?

And KG, FC, FK, GA, and FR depending on the application.
GA and FR are new.
GA replaces KG. [I sometimes use KG for the 50v under 6.8uF in PSUs.]

FR is almost an exact match to FM for ESR/ripple but has more hours endurance.

.

[gixie]

Re: Which nVidia mobo chipsets are bad?

Mine are FJ, so from the "approved" list...Whew, that's a relief...
I'm waiting for the other ones, next to the chipset, to start the re-capping job.
Fingers crossed

[gixie]

Re: Which nVidia mobo chipsets are bad?

Hello,
All the caps were replaced, however, the motherboard refuses to boot
I have a diagnostic card and I checked the code in the booklet. The code is FF which means: Flash ROM programming was successful. Next restarting the system BIOS.
What does it really mean?
Also there's a LED that's always on, the RESET LED, in which case the booklet says: When in reset period, this lamp display. If it is lit all the time, check the following:make sure that the reset pin is plugged properly, or the reset circuit is broken.
What does THIS mean?
Should I call it quits and recycle the mobo?
I am tired of this mobo, but I still have some 4 socket 939 cpus lying around (that nobody is interested in on Kijiji)
Ideas anyone?

[Scenic]

Re: Which nVidia mobo chipsets are bad?

if it always says FF and nothing else, the board is basically dead.
this will happen if the BIOS is bad (wrong BIOS flashed to it or bad BIOS chip) or if the board itself it just ..well.. dead/FUBAR

as for the reset LED.. this probably means that the board is stuck in a reset loop (as if you held down the reset button all the time)..

overall, this kinda sounds like a bad BIOS to me..

[gixie]

Re: Which nVidia mobo chipsets are bad?

So, recycle, right?
Do I salvage the capacitors I just soldered on it? Anyone wants them

[Scenic]

Re: Which nVidia mobo chipsets are bad?

if the BIOS chip is socketed, you could try hotflashing it in another board.
(boot the other board up into DOS with its original bios chip, swap the chip with the dead one, and flash the correct BIOS for the dead board onto the chip.)