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[FurryNutz]

I bought my iR gun on amazon for $15. Werks great and cheap enough to get one IMO.

Seems like the metal heat sink mod could help save or prolong life. Still test your router away from that metal shelf as well.

Gook luck on interview and keep is posted,..

[Patrick533]

Ok,

Pretty much done testing!

I moved the DIR-827 onto my desk and put it on my laptop chiller using the USB port on the back of the DIR-827 instead of the fan. Even the kids asked "did you find out what was wrong with the network" because it has not died in days!

Everything is enabled! WiFi, you name it, as long as I have a fan on this thing it works great! Turn the chiller off and within a few hours, CRASHOLA. One thing I noticed before I moved it, I noticed I had gained about 5-6 db more signal strength on the WiFi using my laptop with Inssider. Turn the fan off, the signal strength would slowly drop. The laptop can't move! I think the DIR-827 WiFi was reducing power as it heated up.

Too bad! Now I want my DIR-825 BACK, that thing was rock solid!

I looked at buying an aluminum box to put this thing in and heat sink it properly, project boxes are 30 bucks now days, I guess aluminum is now a precious metal!

I have done enough to convince myself that this DIR-827 has a heat issue, it was in the mid 40F's here today. If it makes it through this summer, fine, if not, E-waste. I looked to see if D-link had a repair service, it's called "buy a new one". We don't even turn the AC on here until it gets past 90F and that is mostly because of the animals. It probably got damaged by heat here last Summer and being at that time I had 2ea 2.4ghz high power networks, one for high speed("N" short GI) and one for the B&G only, I never noticed until I gave one of my high power routers away to a friend and switched to 5Ghz. The high power routers were always 10-20 feet away from the DIR-827, if a little 1 watt AP damaged the DIR-827, it had problems to begin with. The usual MAX signal strength in my office is -25Dbm on 2.4Ghz and drops quickly as you move away.

Oh well, another one bites the dust.......

I might try putting small fans on it but considering the temps here in the summer, there is not enough temperature headroom for that, maybe only as a router.

[FurryNutz]

I presume that both the 827 and 857 will have this issue.

I recommend doing the sink mod and maybe keep a fan on it during warmer weather conditions if your going to keep the WiFi radios doing. If you still want to keep the wired portion of the 827 going, I feel it would be still a good router for you, just turn off the radios and install a newer DIR-8 L series router in wired AP mode as your new WiFi upgrade to the 827 router. Or maybe a DAP model unit in AP mode would be a good set up as well. I think the router will be good to keep going until it completely dies or it's time for an upgrade.

Let us know and keep us posted. Have a great weekend.

[Syaoran]

Really sorry about being so late on getting around to this.  Forgetting, an extended vacation, and realizing I only have NorthBridge heatsinks laying around has stalled me on getting this done.  I am going to order some Swiftech MC14 copper heatsinks for this if anyone who has tried this thinks they will be suitable. 

http://www.swiftech.com/mc14bgamemoryramsinks.aspx

Will those fit within the router and be up for this or do I need to find something smaller?

[FurryNutz]

I think the hight will be the factory.

They should be around the following dimensions:
Size:14x12x(5.5mm<height)
20mmx19mmx5.5mm

You'll need 2 sinks to install. I found mine at a local PC parts shop. "Universal VGA Heatsink and fan kit by startech.com. It comes with a large round style heat sink and fan for a video card however there are 8x 20mmx19mm and presume the height is>(5.5mm) small chipset heat sink block like the ones in the picture. Entire kit was $25 bucks. I can't seem to find it on there site, however if one to call them, might find out if they still ship it. I'll find a use for the large heat sink and fan later on. The back of the kit says the dimensions are 20mmx19mm. This may be the correct dimensions however no height dimension numbers are given.
 

Update: I had someone confirm for me that these are the correct dimensions for the heat sinks that are desired for this mod: 20mmx19mmx5.5mm

FYI:
I just bought a DIR-835 from fleabay and it arrived to day. Low and behold same composite heat sink tab on top of the one chip...wasn't fixed well. I pulled it off and looked at the taped bottom of the sink, only 2 small portions of the sticky tape where it had touched the chip were seen. Not a full entire coverage of the chip was seen so heat transfer on from the chip to the heat sink I presume would not be good and eventually probably deteriorate the chip over time.

Let us know if you can find the correct size chips, maybe we can help you locate some...Keep us posted.

Really sorry about being so late on getting around to this.  Forgetting, an extended vacation, and realizing I only have NorthBridge heatsinks laying around has stalled me on getting this done.  I am going to order some Swiftech MC14 copper heatsinks for this if anyone who has tried this thinks they will be suitable.  

http://www.swiftech.com/mc14bgamemoryramsinks.aspx

Will those fit within the router and be up for this or do I need to find something smaller?

[Syaoran]

I might need some help finding those.  I called a few places I normally deal with and they don't have anything that small.  If you can find something that will ship them to me in Canada and preferably copper but not necessary, I'd be more than happy to order them.  One other thing I'm a bit curious about.  What's the easiest way to get the casing off of the DIR-857?

[FurryNutz]

After taking the screws off, gently lifting the front side of the cover, upwards then gently pulling the cover in a forward direction should help release the back latch tabs and it should come right off with out breaking the tabs off. Once you do it you'll see how it's done...

I'll start looking for other resources for heat sinks...

I sent Startech a form letter on there site asking if they still have this one kit available.

Those heat sinks would work that you found, there just too tall. 

[Syaoran]

Thanks for that.  I might yank it apart later just for the fun of it and shoot it some more with the thermo gun. 

[FurryNutz]

I think these might work:
http://www.amazon.ca/Heatsink-Perfect-Raspberry-copper-aluminum/dp/B00EVJF3JO/ref=pd_sim_sbs_ce_1

Eh, just looked at the dimensions, there smaller than what we need...still looking.  

I don't know if directron ships to CA, could ask. There would be great:
http://www.directron.com/rhs02.html?gsear=1

This is closer, still a bit to hight I think:
http://www.amazon.ca/XINTE-Aluminium-Quality-Heatsink-Processor/dp/B00HN2AY4A/ref=sr_1_fkmr1_2?s=electronics&ie=UTF8&qid=1389486882&sr=1-2-fkmr1&keywords=aluminium+chipset+heatsink
I wonder if the Mfr of these also has 5.5 or 6mm if we try to contact the Mfr directly...

Here we go:
http://www.amazon.ca/XINTE-Aluminium-Heatsink-Graphics-Motherboard/dp/B00HN26I54/ref=sr_1_fkmr0_2?s=electronics&ie=UTF8&qid=1389487218&sr=1-2-fkmr0&keywords=XINTE+Aluminium+4+PCS+22*22*6mm+High+Quality+Heatsink+Heat+Slug

[Syaoran]

After taking the screws off, gently lifting the front side of the cover, upwards then gently pulling the cover in a forward direction should help release the back latch tabs and it should come right off with out breaking the tabs off. Once you do it you'll see how it's done...

Mine must be on pretty good.  I can't get those front clips to release and I don't really want to just rip the top off. 

[Syaoran]

No, don't remove them, leave them on. Just attach the new metal ones right on top of the composite ones.

I'm starting to think I've missed a screw.  There is the two under the little rubber things.  Is there a third and maybe even a fourth under the label?

[FurryNutz]

There are 4 screws..two under the small round flat surface rubbers and 2 under the square ones.

[Syaoran]

There are 4 screws..two under the small round flat surface rubber a 2 under the square ones.

Thanks!  That's why then.  :p

Edit:  Got it!

[FurryNutz]

Kewl...take pics when and if you do the mod. Let us know the temps your seeing on the one chip.

[Syaoran]

Here we go:
http://www.amazon.ca/XINTE-Aluminium-Heatsink-Graphics-Motherboard/dp/B00HN26I54/ref=sr_1_fkmr0_2?s=electronics&ie=UTF8&qid=1389487218&sr=1-2-fkmr0&keywords=XINTE+Aluminium+4+PCS+22*22*6mm+High+Quality+Heatsink+Heat+Slug

I just ordered these.  The ETA for those is a few weeks.  Not used to dealing with Amazon.ca but I'll let you know when they get here.  I have Arctic Silver MX4 I am going to use between the heatsink and surface.  This stuff is non-conductive so I don't have to worry if a tiny little drop gets on to something it's not supposed to.  It's not an adhesive but for this application, it will provide a good seal between the two and hold the light heatsinks in place with ease.  Thanks for the help in getting this started!  [=