Heat sync fell off

Mohamed Xiyaan · Sep 19, 2015

So when i received my Asus Z10PE-D16 WS one of the heat sync was fallen off
and i don't have the warranty, so can it be fixed with a glue? if so please suggest me a one.
sorry for the blurred images.

N3rdR4ge · Sep 19, 2015

Have you tried calling Asus? Perhaps you can order just a replacement heatsink from them. I wouldn't recommend trying to reattach that with anything.

TechyInAZ · Sep 19, 2015

Defiantly try and RMA it.

Mohamed Xiyaan · Sep 19, 2015

I have contacted Asus. Waiting for a reply

sirstinky · Sep 19, 2015

I've never seen that happen before, especially not on a high-end board like that one. It sounds like it's a used board, and unfortunately, gluing that back on isn't the best idea because glue isn't very thermally conductive. What you could do is go get some thermal adhesive like for CPU coolers. http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007788&IsNodeId=1&Description=thermal%20adhesive&name=Thermal%20Compound%20%2f%20Grease&Order=BESTMATCH&isdeptsrh=1 It's like thermal paste, but it's more of a glue. You'd need to find a way of applying pressure to the heat sink while the adhesive is curing though. That should work fine.

techgeek · Sep 19, 2015

If you can't RMA it and have to fix it, remove the plate from the motherboard via the two spring loaded screws. You'll need to remove the old adhesive from both the plate and the heatsink. Try not to scratch either surface too badly. I would look up a lapping procedure on the interweb and use this procedure for removing the adhesive. If you are careful you should end up with the mating surfaces clean of adhesive. Hopefully you leave the surfaces flat, but not too polished. If the surfaces are too polished, the adhesive may have a hard time gripping the surface.

Then as sirstinky mentioned use a thermal adhesive to "glue" them back together. Maybe use a vice to apply steady constant pressure until it sets. Then re-attach the heatsink to the motherboard. There is likely a thermal pad underneath that plate. Hopefully they / it will remain intact when you remove the plate. If not, you'll either have to replace them, or use thermal interface material (thermal paste), don't use thermal adhesive here.

Mohamed Xiyaan · Sep 19, 2015

sirstinky :

Yeah, probably problem with the postal people.
Thermal adhesive is promising but will it stick together?

techgeek · Sep 19, 2015

Mohamed Xiyaan :

Thermal adhesive is essentially thermally conductive epoxy. Most are two parts (like epoxy), you mix them and apply it. It sets hard like epoxy. This is likely what was used to begin with.

Mohamed Xiyaan · Sep 19, 2015

techgeek :

If you can't RMA it and have to fix it, remove the plate from the motherboard via the two spring loaded screws. You'll need to remove the old adhesive from both the plate and the heatsink. Try not to scratch either surface too badly. I would look up a lapping procedure on the interweb and use this procedure for removing the adhesive. If you are careful you should end up with the mating surfaces clean of adhesive. Hopefully you leave the surfaces flat, but not too polished. If the surfaces are too polished, the adhesive may have a hard time gripping the surface.

Then as sirstinky mentioned use a thermal adhesive to "glue" them back together. Maybe use a vice to apply steady constant pressure until it sets. Then re-attach the heatsink to the motherboard. There is likely a thermal pad underneath that plate. Hopefully they / it will remain intact when you remove the plate. If not, you'll either have to replace them, or use thermal interface material (thermal paste), don't use thermal adhesive here.

I will try this. Good call on removing the heat sync from the board, I never thought of that.

Mohamed Xiyaan · Sep 19, 2015

techgeek :

Mohamed Xiyaan :

Thermal adhesive is essentially thermally conductive epoxy. Most are two parts (like epoxy), you mix them and apply it. It sets hard like epoxy. This is likely what was used to begin with.

Like this one?
http://www.amazon.com/Arctic-Alumina-Thermal-Adhesive-5g/dp/B0009IQ1BU

techgeek · Sep 19, 2015

Mohamed Xiyaan :

Yes, exactly like this. As you can see from the reviews as you scroll down, many users are stating that you wouldn't want to use this on the CPU heatsink as you will unlikely be able to remove it afterwards. Again, this is likely similar to what was used originally to affix the fins to that plate. It probably took some impact which caused it to jar loose. Similar to if you glued two items together that were both very smooth and jarred it along the shear axis of the adhesive. As most adhesives tell you that if you are bonding two smooth items together, you should rough the mating surfaces to help adhesion. However in your case roughing the surfaces too much could lead to air pockets which would lead to poor heat conduction. So I wouldn't rough them up much, just remove the old stuff.

Mohamed Xiyaan · Sep 19, 2015

techgeek :

Mohamed Xiyaan :

Yes, exactly like this. As you can see from the reviews as you scroll down, many users are stating that you wouldn't want to use this on the CPU heatsink as you will unlikely be able to remove it afterwards. Again, this is likely similar to what was used originally to affix the fins to that plate. It probably took some impact which caused it to jar loose. Similar to if you glued two items together that were both very smooth and jarred it along the shear axis of the adhesive. As most adhesives tell you that if you are bonding two smooth items together, you should rough the mating surfaces to help adhesion. However in your case roughing the surfaces too much could lead to air pockets which would lead to poor heat conduction. So I wouldn't rough them up much, just remove the old stuff.

I will do this. But i wouldn't be able to test it, coz I only have this motherboard and a PSU for now. And i wouldn't be able to purchase xeon's anytime soon.

techgeek · Sep 19, 2015

So I assume there is not option for a RMA on this board? This would obviously be the preferable approach since this is obviously a manufacturing issue, or a rough handling issue on the part of the courier.

If the RMA isn't an option, then the adhesive is the way to go. I've used it many years ago to attach heatsinks to my RAM on my old RIVA TNT (in the late 90's) and it works well. I think I might even have the adhesive I used stashed somewhere around here.

Mohamed Xiyaan · Feb 3, 2018

Risk was too high. So I bought a new board

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