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View Full Version : LN2 board prep the no holds barred way



chew*
10-19-2010, 07:15 AM
OK first off this type of prep voids all warranties.........

Second of all if you RMA a board after benching it on ln2..............i really don't have to tell you it's wrong.

Since i'm one of those guys that never intends to RMA something benched on Ln2 I take all precautions possible to avoid hardware death.

First off you want to inspect the boards and post the board before anything........make sure it works!!!!!!!! I take this time to log temps while idling.

http://chew.ln2cooling.com/qdig-files/converted-images/XS%20mods/med_IMG_3009.jpg

Next step that will not void warranty........replacing tim and ensuring good contact, I like to relog temps at this point.

As you can see in this pic I have already done this and the paste disperion is perfect.

http://chew.ln2cooling.com/XS%20low%20clock/hwbot%20team/team%20XS.jpg

Next step, I use art eraser to block off all holes that lead to slots, buttons etc etc..........if you conformal a board without doing this say goodbye to the board preety much.........

http://chew.ln2cooling.com/XS%20low%20clock/hwbot%20team/IMG_3091.JPG

Next step is to tape up all dimms and slots where you don't want the conformal in case you have one of those oops moments.

http://chew.ln2cooling.com/XS%20low%20clock/hwbot%20team/IMG_3090.JPG

Now that all prep is done we can start the conformal application. Backside is complete and drying and 100% waterproof now. Tommorow when i pick up a smaller disposable brush I will hit the frontside.

http://chew.ln2cooling.com/XS%20low%20clock/hwbot%20team/IMG_3095.jpg

pcjunkie209
10-19-2010, 05:17 PM
Nice tutorial!

xeromist
10-19-2010, 06:22 PM
Does the entire board really need the conformal? I know you said "no holds barred" but it seems like it won't offer any advantage.

chew*
10-19-2010, 07:34 PM
Does the entire board really need the conformal? I know you said "no holds barred" but it seems like it won't offer any advantage.

This board will be being benched with multiple GPUS and the cpu on ln2 so yes in this particular case the entire board needs to be sealed from water.

When its complete, I can pour water on the board and it will still work. Water is electronics enemy, eliminate it from the equasion and what you end up with is only possible board failure do to pushing it to hard.

Here's a couple shots of what that can look like with just one GPU.

http://chew.ln2cooling.com/qdig-files/converted-images/XS%20mods/med_IMG_2888.jpg

http://chew.ln2cooling.com/qdig-files/converted-images/XS%20mods/med_IMG_2684.jpg

There are also other advantages to this but we can go into that later.

xeromist
10-19-2010, 08:15 PM
Good point. I wasn't thinking about the GPU.
Looking forward to the next update.

chew*
10-19-2010, 09:23 PM
Ready to rock and literally bullet proof insulation against DI. Ln2 will need a tad more work around dimm slots. But this board has to come to Cali with me for blizzcon so a mate can bench it on Dry Ice for a week or 2 with single vga's so it's good enough for now till it gets back, then it will get the final trimmings.

http://chew.ln2cooling.com/qdig-files/converted-images/XS%20low%20clock/hwbot%20team/med_IMG_3100.jpg

http://chew.ln2cooling.com/qdig-files/converted-images/XS%20low%20clock/hwbot%20team/med_IMG_3101.jpg

http://chew.ln2cooling.com/qdig-files/converted-images/XS%20low%20clock/hwbot%20team/med_IMG_3102.jpg

http://chew.ln2cooling.com/qdig-files/converted-images/XS%20low%20clock/hwbot%20team/med_IMG_3103.jpg

http://chew.ln2cooling.com/qdig-files/converted-images/XS%20low%20clock/hwbot%20team/med_IMG_3106.jpg

xeromist
10-19-2010, 10:08 PM
I see you neutered one of the DIMMs; does that serve a purpose or is it just what you have?

chew*
10-19-2010, 10:31 PM
I see you neutered one of the DIMMs; does that serve a purpose or is it just what you have?

For 3d benching there is no need for triple channel, it also helps attain a lower CB temperature.

If your referring to the heatspreader, I lost it somewhere in this mess, its actually 2 sep sticks from 2 sep 6 gig sets, the only surivors from a bad batch of elpida ram.

xeromist
10-19-2010, 11:19 PM
Yeah, I was referring to the spreader.

On a side note: I was just thinking that the level of performance you consider a "bad batch" is probably sitting in hundreds of thousands of computers with the owners playing Farmville and none the wiser :D

chew*
10-19-2010, 11:40 PM
Yeah, I was referring to the spreader.

On a side note: I was just thinking that the level of performance you consider a "bad batch" is probably sitting in hundreds of thousands of computers with the owners playing Farmville and none the wiser :D

Yah when I say bad batch, these were prone to blow up just while browsing the internet at stock speeds. Most people would know it or they would not be booting with what happened with this batch.

These 2 sticks from that batch refuse to die however, 8 gigs of there brothers already went the way of the dodo.

xeromist
10-20-2010, 01:08 AM
Survival of the fittest on Chew's test bench.

V2-V3
10-25-2010, 05:52 PM
Very impressive conformal coat Chew, At quake con i was able to watch crew pour coolant all over the board and have it roll right off with no residue!!!!!

looks to be extremely durable, too bad boards are not shipped from the factory pre-coated :D

FlanK3r
10-26-2010, 08:35 AM
Nice thread Chew*. How good is insulating coating? Than no need so much eraser behind CPU?

chew*
10-27-2010, 05:24 AM
Only need eraser where pin contacts will be, other than that board is waterproof.

People have seen me bench before literally with water just pouring off board.

Mason@ASUS
12-07-2010, 01:09 AM
Nice chew! Your CPU pot looks like it gained about 5 pounds from all the ice. Did you break any CPU or 3DMark recxords on that R3E?

chew*
12-09-2010, 10:33 PM
I'm not sure mason, that particular board is being passed around to some people with a chip currently for some 3d benching.

One can only hope records are broken.

I'm gonna take a stab at some i7 920 action when it gets back.

ottoyu34
12-10-2010, 12:13 AM
http://chew.ln2cooling.com/qdig-files/converted-images/XS%20mods/med_IMG_3009.jpg

Anyone notice the bunch of money thrown to the AMD board in the background there. Haha

Hey chew, What is the specific application do you put on? I've seen some put on nail polish before.

chew*
12-10-2010, 01:25 AM
Wish it was a bunch of money heh, think its like 3 crumpled 1 dollar bills.

The coating used is made by MG chemicals and is Urethane based conformal.

Silicon based is not as messy but I can cure this urethane with a little heat in 30 mins which is crucial like for instance if I go to do a live comp.

Silicon base takes like 24 hours to cure with or without heat.

ottoyu34
12-10-2010, 02:13 AM
That's cool when you can do it right away at the competition.