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Old 08-31-2005, 05:21 PM   #1
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Default ASUS P5GDC-V DELUXE - Very recent board, bad caps

http://forums.somethingawful.com/sho...#post302484137

Well done ASUS.
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Old 08-31-2005, 06:02 PM   #2
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

That's why I build with Abit and MSI MB's (:
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Old 08-31-2005, 09:25 PM   #3
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

Better picture:



The caps are OST brand 680f 4V. All ten caps of this type are bulging and oozing the brown stuff from the vents. The board was purchased from Newegg in November 2004.

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Last edited by willawake; 09-02-2005 at 03:51 PM..
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Old 08-31-2005, 09:59 PM   #4
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

Asus was one brand that the caps plague didn't hit all that hard........ Its really sad to see this, especially at this point in the game. Shame on Asus.
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Old 09-02-2005, 03:32 PM   #5
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

I received my replacement board today. It's a newer revision of the same model and the affected caps are all a different brand.

I'm glad they corrected their error, but it would've saved me a lot of hassle if they had used good caps from the very beginning...
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Old 09-04-2005, 09:41 AM   #6
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

What brand are the caps on the new board?
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Old 11-10-2005, 11:18 PM   #7
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

my housemate had the same asus MB, and problem!
my pics look nearly exactly the same, so I won't post them.
it all started about about mid summer early this year (Aussie)
system would occasionally crash, bsod etc.
went through all the usual sypmtoms, eventually saw the
caps leaking. He put up with it by adding extra cooling, but that
was only good for a while, then when the heat came back on this
summer, prob back. so I found a suitable repalcement in farnell
and went onto the job of replacing.
I had forgotton about the stackcool layer on MB (essentially just another
piece of PCB attached at critical points to the MB) but it acts like a
big heatsink, and took about an hour to remove (without damage)
by careful use of desolder wick. I was then able to attack the caps in
the normal manner. Just using the standard technique with the stackcool in
place was not possible (too much heat needed and still not melting solder closest to topside).
The caps I used were SANYO 6SP680M (not stocked by farnell anymore).
The end result was board worked again, and all instablity gone
he can actually now OC the board and stay stable.
Andrew
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Old 11-30-2005, 03:03 AM   #8
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

Thank you for this site!!! MY P5GDC-V looks exactly like that. All of those caps are oozing. The thing is with this board, its hard to see those with the heatsink fan on. I didnt even think to check under there until I saw this thread. The on-board video stopped working about a month ago. I bought this board less than a year ago, where is the best place to try and get a replacement? Straight from ASUS?

This is a really pretty pathetic problem. On such a new motherboard!
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Old 11-30-2005, 03:05 AM   #9
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

pics?
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Old 11-30-2005, 11:01 AM   #10
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

Here is a picture of my P5GDC-V. These motherboards have a 3 year warranty, so I called the place I bought it from and they are RMA'ing it.

I guess I was lucky the board still worked, except for the onboard video. I could not use the onboard video at a higher res that 800x600, and the picture had bad interference lines running through it. Kind of like an old tv with an antenna. Also, it would randomly reboot when using the onboard video. Switching to external video card worked, but I didnt buy this motherboard to throw away a video card!!!

Purchased December 2004. All 10 caps show signs of bulging or brown gunk. One has it coming out the bottom. I also found a pile of brown stuff sitting on the pci-x connector. The caps appear to be the same brand and type as thatdog's.
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Last edited by hokieengineer; 11-30-2005 at 11:07 AM..
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Old 12-01-2005, 11:49 AM   #11
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

thanks for the pic. it is always interesting to see how the new boards are doing. (considering that many people still believe the badcap situation is something from the past)

i am hoping you have the same luck as the previous poster thatdog and get a new board without the ost caps. please let us know what happens
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Old 12-05-2005, 03:53 AM   #12
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

I've had a P5GDC (but not a P5GDC-V Deluxe) for a couple of months, and I could not see any bad capacitors (they appeared to be ones of my first choice in quality electrolytics). If this is true, some manufacturers are selling deluxe boards at almost the same price, but with some cost-cutting in the quality of the electrolytics.
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Old 12-12-2005, 05:18 PM   #13
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

Quote:
Originally Posted by thatdog
Better picture:



The caps are OST brand 680f 4V. All ten caps of this type are bulging and oozing the brown stuff from the vents. The board was purchased from Newegg in November 2004.

But wait! I see something different about these OST caps. They're less than 1000 uF! But are 4V! Most motherboards don't have such cap values, AFAIK.

Makes me think that could be the cause. Thus it's possible that Asus didn't use the right cap value! The caps likely are getting overloaded because of the microfarad rating! Also, unlike many of the OST caps, these have a bright blue wrapper! The OST caps on my Asus A7V8X-X next to the processor socket have a dark blue wrapper. And they're probably 3300 uF.
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Old 12-12-2005, 08:00 PM   #14
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

Quote:
Originally Posted by RJARRRPCGP
But wait! I see something different about these OST caps. They're less than 1000 uF! But are 4V! Most motherboards don't have such cap values, AFAIK.

Makes me think that could be the cause. Thus it's possible that Asus didn't use the right cap value! The caps likely are getting overloaded because of the microfarad rating! Also, unlike many of the OST caps, these have a bright blue wrapper! The OST caps on my Asus A7V8X-X next to the processor socket have a dark blue wrapper. And they're probably 3300 uF.
Only 6800 F total, and most likely not all together. The 4V rating means that everything (CPU, memory, AGP, etc.) is being regulated off the 3.3V supply. Recapping with 1000 F, 10V caps would give almost 50% more capacitance in each location, provide better voltage transient capability, and would probably actually reduce peak load on the power supply.
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Old 12-13-2005, 12:49 AM   #15
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

> I see something different about these OST caps. They're less than 1000 uF! But are 4V! Most motherboards don't have such cap values, AFAIK.

Normally, the low voltage, low capacitance caps in the CPU/VRM section are Solid-Polymer-Aluminium (SPA) caps, typically from Fujitsu. These are the small yellow caps with a K-vent on many Intel motherboards.

It's possible that Asus cheaped out and went for a less expensive, conventional Al electrolytic from OST, and those can't handle the high ripple currents that the SPAs are designed for. Hence the blow-outs.
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Old 12-13-2005, 01:28 AM   #16
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

Quote:
Originally Posted by AK0R
The 4V rating means that everything (CPU, memory, AGP, etc.) is being regulated off the 3.3V supply.
Maybe it should be it isn't? Newer P4 boards runs CPU regulator always off 12V (that's why the additional power connector with two 12V and two GND wires is there). Maybe the caps shoule be rated 16V?
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Old 12-13-2005, 02:51 AM   #17
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

if the voltage those caps filter exceed 4v you wont care about the caps.
the cpu will be dead long before the caps fail.
they filter cpu vcore.
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Old 12-13-2005, 09:21 AM   #18
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

Most probably the caps are located after the VRM's so the input side on the VRM sees 12v but the output only CPU vcore, i.e. around 1,5v... So the 4v caps should be more than enough... A test with a multimeter would be easy enough to verify this...
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Old 12-13-2005, 10:12 AM   #19
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

Sorry, I was thinking the caps were filtering the input voltage.

Per's right, the caps should be filtering whatever is coming out of the VRMs, for all their various functions. I think linuxguru hit the nail on the head; a total misapplication of required function, trying to save a few cents per board.
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Old 12-19-2005, 03:43 PM   #20
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Default Re: ASUS P5GDC-V DELUXE - Very recent board, bad caps

more of the same on pcper
http://forums.pcper.com/showthread.php?t=408460
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