[Official] ASUS M2N-SLI and M2N32-SLI Club! - Page 1238 - Overclock.net - An Overclocking Community

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[Official] ASUS M2N-SLI and M2N32-SLI Club!

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post #12371 of 12385 (permalink) Old 02-04-2019, 12:34 PM
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I would go ahead and carefully replace the caps if you intend to keep using it once fixed.
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post #12372 of 12385 (permalink) Old 02-05-2019, 05:05 AM
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Quote: Originally Posted by mattliston View Post
I would go ahead and carefully replace the caps if you intend to keep using it once fixed.
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post #12373 of 12385 (permalink) Old 02-05-2019, 03:13 PM
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Thanks guys, was hoping that was the answer since I enjoy this board ever since finding the forum here a few years ago.

Unfortunately, I was wrong about my PC working great with the new PSU, when I initially tested it fired right up and I turned off without waiting for post to continue working on cleaning/installing.

The M2n sli deluxe stays running but does not give any post beeps & has no video input to monitor.

While removing components to see if it'd post/beep; I discovered that the initial issue (pressing power button, PC starts spooling up but then turns off after 1-2sec) still exists but is rare. For example: with old psu it'd never start on first try and often take 10-30 attempts to start up and stay on. With new PSU usually starts first time and stays on, rarely I had to press power 1-3 times until it remained on.

Following has been done:

- Remove 1 component at time see if beeps. Removing everything 2x ram, GPU & sata cable didn't cause beeping, just stayed on with fans running/lights

- Replace CMOS battery with known good, put jumper pins 2 & 3 for 30sec then back to pin 1 & 2

- Did a brief inspection to see if any part of back side board was burnt or had cold/cracked solder joints, seemed good but will double check.

Does anyone happen to have any other ideas on what to check next? I have quite a bit of equipment (scope, meters) bit am new to electronics.

I will be researching meanwhile and will definitely update as I imagine more users may be finding problems popping up on this aging but great board.

Cheers fellas!

Mobo: m2n sli deluxe, 965 be
PSU: corsair cx650m (only using the included connectors)
GPU: hd 7850
ram: 2x 2gb ddr2
SSD

Last edited by gayLaser; 02-05-2019 at 03:18 PM.
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post #12374 of 12385 (permalink) Old 02-05-2019, 09:31 PM
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I would keep trying a single stick of ram, and perhaps the second PCIE x16 slot, just to rule it out.


What is the 5volt rail amperage of your power supply? Should be okay if it is more than 10 amps, so that should be able to be ruled out.


Leave out any boot devices. keyboard, gpu, ram stick, and cpu should be bare bones successful if all is well.




I have had luck in past just unplugging power, and leaving board overnight to "breathe" away from being plugged in. Odd solution, but has helped me recover from strange overclocking results with this Deluxe board.


But that was back when I was pushing the dual core I first had past 3ghz. Was pretty tough to do on this board, as I was very green to OC'ing at the time.


This board was my first custom build!!
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post #12375 of 12385 (permalink) Old 02-11-2019, 09:35 PM
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Tried the typical swapping things in/out once more to no avail.

The rest of this post may be boring, just a log of my testing, hopefully may be useful to someone in the future in some way.

I decided to make things more interesting and desoldered the 4 bulged capacitors. I also desoldered a 5th cap of the same type that was nearby.

All 5 of the desoldered caps are TK ATWY 820uF 6.3V.

To test these I will be using a cheap LCR (mega328.) Note that this isn't precision equipment & is for reference only.

Pics w/ captions:
https://imgur.com/a/wR4xBWT

Caps 1-4 fails, returns incomplete test data and measures at ~30 pF.

Cap 5 test doesnt fail and is rather close to spec.

In terms of replacements I'm sure that many choices would work but for this scenario I chose get into the datasheets with the goal of finding the closest replacement possible when it comes to impedance/ripple current. Probably overkill but good chance for me to practice using datasheets etc.

The closest component I could find was a Rubycon "AX" series 820uF, 10v. The Ruby AX has the same impedance of 0.036 and it's rated max ripple current is slightly higher at 1540 compared to the TK ATWY's 1140.

Maybe these failed caps aren't the cause of the board not posting, I don't know their role; if anyone knows what purpose they serve in these particular areas feel free to let me know!

I'll be replacing the 4 bad ones and see if it will post. They arrive in a few days, will update.
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Last edited by gayLaser; 02-11-2019 at 09:42 PM.
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post #12376 of 12385 (permalink) Old 02-16-2019, 12:40 PM
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Replaced caps, double checked work, PC starts up but no display/post. Powers up each time without hiccuping like it was before but everything else is the same in regards to no beeps etc.

Prior to this happening a couple months ago; I noticed that each start up the bios would alert saying that CMOS wasnt saved or something similar and asking if id like to continue or not. Changing the buttoncell battery out never seemed to fix that issue, then it stopped posting all together. Possibly unrelated or just coincidence, figured id mention it.

Sadly I believe any more time thrown at diagnosing this is not going to be worth it.

Will try to find a different mobo that will be good for my 965 b.e. I suppose. Considered buying another m2nsli deluxe but kinda concerned about headaches involved with buying unknown used stuff on ebay.

In the event that I do decide to probe more into this board I will certainly update, I managed to stumble upon a surprising amount of relatively recent posts in regards to troubleshooting these boards on a polish forum called elektroydkaPL or something similar to that, it isn't in english but ive been trying to translate the pages and may give it another shot.

Thanks all

Last edited by gayLaser; 02-16-2019 at 06:42 PM.
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post #12377 of 12385 (permalink) Old 02-16-2019, 07:50 PM
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Have you checked/verified the CMOS battery stuff is connected to the motherboard properly?


Maybe a bad solder joint is cracked or something.


Remove the cmos battery, and try to boot without it. Does it react the same way you mention it did months back before this started going downhill?
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post #12378 of 12385 (permalink) Old 02-17-2019, 03:44 AM
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Greetings all. May I ask a few questions about my M2N32 WS Pro. I was trying to upgrade the CPU from Phenom X4 9550 to Phenom II X4 975, RAM form 4xGB DDR2 6400 non-ECC to 4x2GB DDR2 6400 ECC unbuffered (it was cheaper and Phenom supports ECC so I said why not); and add Firepro V7900. BIOS v. was/is 2001 official from ASUS. I couldn't make it POST with the modified BIOS, X4 975 and the ECC RAM and right now I think that it was because of the GPU, all I got was one long and three or four short beeps. I remember a few years ago I was trying to use R9 280x for video compression on this board and I had to run it in the second PCIE slot. For some reason the system didn't want to start when the GPU was on the first PCIE slot but there were no complains when Nvidia GPU was occupying it.

Decided to reverted to original configuration (2001 BIOS, x4 9550, 4x1GB and some Nvidia GPU) and test the new components one by one. I started with the ECC RAM and couldn't make it POST - there were no beeps so I decided that it's because of the BIOS settings. Then I added the old RAM and Firepro V7900 in the first PCIE slot - got the same long beep followed by three of four short beeps. When I moved the Firepro to the second PCIE slot (didn't change BIOS settings) I got no POST, no beeps at all, fan started spinning and system was turning off after few seconds. Removed the Firepro and placed the Nvidia GPU on first slot to change BIOS setting and since then no POST at all. Initially the system was beeping if there is no RAM but right now there is no beeps, just starts the fans for a few second and that's all.

I tested all of the initial components - x4 9550, the initial memory and the nvidia GPU on another board the there is no problems with POST. Took the Firepro from a working machine and I know that it's working fine.

My questions are:

What setting to apply in BIOS for ECC RAM? There was something related to ECC but it didn't help to POST.
Any idea why the Nvidia Chipset doesn't like ATI-AMD GPUs? Any BIOS setting?
Any idea what went wrong whit this motherboard? Dead chipset? Or maybe I have to order new BIOS chip?
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post #12379 of 12385 (permalink) Old 02-17-2019, 10:14 PM
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edit/update; just remembered the wording from old pause on post error/warning from 5mo ago: "CMOS checksum error", replaced batt back then, didnt fix the issue starting probs & checksum pause on post still showed.

@mattliston

Tried no battery (3 diff times with reset in both positions and once without jumper at all) with no beeps just lights and fans running (graphics card fan spin for less than 1s then remain off for the remainder).

I will double check that area here shortly. Went over the PB w/ magnification but it wont hurt to check again. Will check battery holder joints again too.

Only 2 spots I didnt inspect:
  • Secondary side: unsure of name but there is a metal shield/support with square port where cpu is, I didn't look into this much and am unsure if it is critical to remove it somehow to inspect.
  • Primary side: couldnt inspect anything covered by the copper heat pipe sinks of what I believe is called the north and/or south bridges.

Despite what I said earlier, I will likely still have this on the bench and researching while I wait for a viable replacement to go on sale.

Ignore if familiar but just for clarity wanting to re-explain events more concise if helpful:
Spoiler!

Last edited by gayLaser; 02-18-2019 at 01:59 AM.
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post #12380 of 12385 (permalink) Old 02-18-2019, 12:02 AM
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Nostalgia! I miss the ol M2N-Sli... I remember running a dual core with a 250-GTS playing Crysis for the first time and the original FarCry, Unreal Tournament 2004. I miss those days. I stuck with my board until 2008 when my old psu killed its self and the board and cpu in a storm. I finally crossed over to ddr 3.


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