Netgear Modem/router Overheating (for DG834G and Similar)

Do you own a Netgear modem/router?
Do you loose connection or is it very slow?
Is it so hot that you can cook eggs on it?

OK, maybe is a overheating problem.
Follow this instructables and probably you will fix it without buy a new one.


NOTE: I have a DG834G, but you can use this guide for the other models of the same family.

Step 1: Open the Router

To open the router use a torx screwdriver.
The screws are located under the rubber foot-cushions in the bottom side.

Step 2: Verify the Capacitors

Verify all your electrolytic capacitors.

In my case one was in bad conditions and I decided to change all of them.
(In Internet you can find some guides that says vendor "TEAPO" isn't so good)

Step 3: Change the Capacitors

Desolder all the five capacitors.

The list of new capacitor is:
1x 10uF 50V (or 65V)
2x 1000uF 16V
1x 1000uF 25V
1x 3300uF 25V

The ones I bought at the store was a little bit bigger of the originals, but there is enough space for them (note that the two 1000uF 16V are put horizontally).

Solder the new capacitors.

Step 4: Add the Heat Sink

Get an old vga card and remove the heat sink.
Use a small saw and a file to reduce its size in a "comfortable" one.

Put some thermal paste on the router chip.
Leave two corners free for add some high temperature resistant super glue.

Put the heat sink on and press it for few minutes.

Step 5: Close the Router and Stand It Up

Close you router and use the stands for keep it in vertical position.
It's very important to do it for a better air circulation.


Conclusion: with less than 5 EUR you retuned your Netgear to new life!
You can improve performances change also the power supply with a stable one and also updating the firmware to the last version.