Constructive interference in the DSL-2540U - now with cooling

Many have already met on the network and on Habré articles that routers and ADSL modems suffer from overheating. Maybe it is already a virus of some kind, but today, after a week of continuous work, "he" almost showed no signs of life. Even go to the control panel did not work.
This post does not claim to be exclusive, but will show where you can solder the wires of the cooler, so that when you turn off the modem, our “Carlson” also stops.


After that, it was decided to install a cooler.
Remove the rubber feet and unscrew the screws under the legs. Remove the case.

An autopsy showed - the patient died from an autopsy :)

Now, for aesthetic reasons or what is at hand, we take a cooler and try it on at the place of implementation.
On this model 120mm cooler becomes wonderfully, but I decided to install a small one for now.
')
They made a round hole and a small hollow under the wire.


We suspend the board from the side of the diodes and pull it out of the case.


Soldering wire options for the cooler at least two:
1. Marked with a black oval: "-" we take directly from the nest, "+" - from the button (as it was implemented);
2. Marked with a red oval: "+" - from the socket, "-" from, possibly, an air conditioner. This option is decided not to use.
Well, the third, if you do not want to turn off the cooler when you turn off the modem button - take the "+" and "-" from the power socket.

I will note that in the picture there are possible soldering places that are nearby - options. It is necessary to solder only to some one.

We take a soldering iron and solder ...

Black wire - plus
Green - minus.

Red wire - plus
Black - minus.

Now it remains the case for small - screw the cooler, connect the wires and conduct testing.


That's all. Now we tighten all the screws and enjoy the work :)


What else can be done: 6

• Place small radiators on the processor and memory;
• Put a larger cooler;
• Attach a decorative mesh to the cooler, which will soon be done so that less dust gets.

UPD: Who knows what contacts with four plugs?