So I want to put a fan on my modem...

[Nordic]

Have fun

I am not educated enough to know where to wire them too. Where did you wire yours too.

 

[segalaw19800]

I have some heatsinks like this. I have even stated I plan on using a heatsink several time snow.


That is exactly how I plan on doing. I just need to know where to "wire it too." It looks like you can help.

... I need to turn off modem. and take some pic be back and will post

 

[segalaw19800]

in the pic you will see two small hole you route wire to the back of the pcb , and there , will you have to solder wire on the board like on the pic... There enough solder you can use on the board already there

 

[Nordic]

Thanks. That is what I was looking for this whole time.

I will update the thread with pictures when it is installed. I got the pcb out of the case now with the heatsinks on. Gosh the main processor heatsink is too hot to touch under load.

 

[segalaw19800]

let it cool down before you work on it... have fun

 

[BazookaJoe]

I think this is all getting very off topic , OP asked a simple question "I want to do X because I want to and that's just that"

So as soon as those pics come in OP, I will tell you exactly where to wire , what to do - and even suggest a very nice simple voltage limiter to tame that fan a bit - there are some great and really simple to use voltage regulator IC's that you can get for super cheap - or often even for free out of old power supplies, you may not need one on this project but they are super useful to know about.

More of a general note for others reading as I see OP has a very slow fan already :

Fans running on full 12V don't just attract dust, they also make noise - and I personally hate fan noise - dropping the voltage can practically silence the fan entirely, and often cause it to take more than 300% ~ 500% longer between dust buildups.

And you will have exactly what you wanted - because that's what modders do, and you don't need any more reason than that

EDIT : I seem to have been screwed by this new forum format - the last 3 or 4 posts simply where not showing :/ after I posted it reloaded and they appeared

I was going to say in the meantime here is a pic of another board using the same connector showing the most typical wiring of these sockets

... but that's all a little redundant now I guess

And to say anyone else looking to do this mod or one similar could also think about using laptop fans such as this :

Various fans like these are easy to get online for $2 ~ $4 , they are incredibly slim and can easily be applied to the inside of the side panel and create more than enough air turbulence to keep the device cool if you DO have one that is overheating *cough*NETGEAR*cough*...

And for anyone looking for a super cheap & easy 5v regulator :

These parts are all very very cheap, available in any electronics store or online by order, and can often be salvaged from old power supplies for free.

The 7805 is a 5v regulator but if 12v is too fast and 5v is too slow you can get them in a range of other values such as the 7807 7v regulator and more.

 

[Mussels]

USB powered fan. simple!

 

[AsRock]

by the way my motorola modem is SB6121 and my fan is mounted on the side and wire to pcb it was e-z to wire thay way..... Dust is e-z to blow off from in side, out

That fan @ full speed with the 0.75A put though it ?. And these modems can get a little toasty too if you have a good internet connection and even more so if you don't use air con in the summer

 

[JunkBear]

I will be doing that too. Not because I need it but because I want to.

Sounds like a quote by a bitchy girl.

 

[segalaw19800]

That fan @ full speed with the 0.75A put though it ?. And these modems can get a little toasty too if you have a good internet connection and even more so if you don't use air con in the summer

Yea this modem get a bit too hot, it's was restarting most of the time, so I install a fan and few heatsink too cool it . now it run like a boss .... no more restart

 

[Nordic]

The deed is done.

...back to the hole whence it came.

This fan is so slow. I think it is under 1000rpm. Still though, I can feel a slight breeze coming out of the top vent. Do these modems run hot? Yes. Do they need anything more than stock? Not really. Were the heatsinks enough to keep it cooler than it was without heatsinks? Yes. Is the fan overkill? Yes. Did I have fun? I very much did so indeed.

 

[BazookaJoe]

Putting unnecessary things into other things is why we invented screwdrivers dagnabbit!

Well done

 

[segalaw19800]

The deed is done.

...back to the hole whence it came.

This fan is so slow. I think it is under 1000rpm. Still though, I can feel a slight breeze coming out of the top vent. Do these modems run hot? Yes. Do they need anything more than stock? Not really. Were the heatsinks enough to keep it cooler than it was without heatsinks? Yes. Is the fan overkill? Yes. Did I have fun? I very much did so indeed.

In deed Well Done