Introduction

When you power up the router, after 4 seconds the power light changes from green to yellow.

Sometimes this is related to a corrupted firmware, but other times is related to a faulty power supply.

In this guide I'll show you how to diagnose this issue and fix by replacing one single component from the power supply.

Insert your X-Acto knife on the groove in order to remove part of the glue that is holding the two parts.
  • Insert your X-Acto knife on the groove in order to remove part of the glue that is holding the two parts.

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Using your prying tools or a butter knife, slide it in and then bend it until you ear it pop.
  • Using your prying tools or a butter knife, slide it in and then bend it until you ear it pop.

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On the board of the power supply you'll probably see the faulty capacitor. Is the one on the right that has swollen.
  • On the board of the power supply you'll probably see the faulty capacitor. Is the one on the right that has swollen.

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The capacitor has a right position. Mind the markings on the capacitor and the board, they must match.
  • The capacitor has a right position. Mind the markings on the capacitor and the board, they must match.

  • I used a 1000uF 25V that I've removed from an old CRT monitor, but the recommended one is a 1000uF 16V or 1000uF 10V (like the original).

  • Using the soldering iron, desolder the faulty capacitor and solder a new one.

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Reassemble the power supply and your router should be back and running fine :)
  • Reassemble the power supply and your router should be back and running fine :)

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Conclusion

To reassemble your device, follow these instructions in reverse order.

Pedro Semeano

Member since: 05/25/2015

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