Adsl Modem Cooling Fan Mod





Introduction: Adsl Modem Cooling Fan Mod

In this hot summer days, your modem may be get crashed in cause of high temperatures. and high temperatures can make your modem work slower. just a small fan can make your modem cool enough. cause you just need to supply air circulation.
here's the things we'll need:

-cutting blade
-soldering iron
-a piece of soldering wire
-nail cutter
-double-sided adheshive tape
-a computer fan of your choice
note: the fan should use the same voltage with the modem, and the modem+fan power(generally in mA unit) shouldn't exceed power adaptors power. example, my modem wants 800 mA, and fan needs 170 mA. my modems adaptor can give up to 1000mA realtime. this is okay.
-your modem, of course.

Step 1: Cutting the Fan Air Hole

in this step, you need to decide to where will you open the hole.
after this, heat your soldering iron, and open the hole. then fine edges with nail cutter.

Step 2: Installing the Double Side Tape to Mount the Fan

first, place a piece of tape under the fan(air out side).
thenshape it with cutting blade.

note: if you want to mount your fan with screws, you wont need this step.

Step 3: Mounting the Fan

remove the protect paper-film on the tape. then place it on the air hole. do not forget to take the power cables to the inside.

Step 4: Testing and Soldering the Power Wires

first, test you fan to solder it in right "current direction"(?). then solder it to power pins on your modem board.

Step 5: Reassemblying the Modem, and the Finish.

reassembly your modem. and start using it!



    • Epilog Challenge 9

      Epilog Challenge 9
    • Pocket-Sized Contest

      Pocket-Sized Contest
    • Science of Cooking

      Science of Cooking

    We have a be nice policy.
    Please be positive and constructive.




    what would be the direction of the fan? is it going in or going out?


    ivaneduardo747 says pulling air out is better.

    Hey, the fan should be pulling out air because hot air accumulates in the top!


    i did not have that knowledge that time, thanks.

    I tried connecting a 12v pc fan and it won't work. How are you making it work?


    hello, sorry for late reply, i never visit my instructables account and rarely check my emails.
    at first, for making a 12v pc fan work, your modem's power adapter should be at the same voltage (you need a 12v output adapter in this case). then, your modems wattage and your fans wattage shouldn't exceed your dc power adapters wattage. if exceed, fan and modem may work, adapter may heat exceededly or modem could reset oftenly. be sure your fan is working and you're connecting them with the right polarity(+ to +, - to -. if doesn't work, try the reverse, sometimes cable colors may be confusing)/

    How are you powering the fan?

    hi, you had 3 wires coming from the fan but now u only have 2...which one did u pull off?


    The yellow one, of course. Red is for positive, black is for ground, and the other one works for rpm measuring, maybe yellow, maybe white, whatever they wanted to do.

    you... do know that melting the plastic with the soldering iron is a bad idea, right? the fumes from the melting plastic can sometimes be toxic.

    Great idea btw! if my modem wasnt leased i would do this. (sasktel gave me a old one that has no air holes, so it gets quite hot)