Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


535 posts

Ultimate Geek
+1 received by user: 35


Topic # 84743 7-Jun-2011 15:48
Send private message

I use Xnet fusion at home, and hardly ever use the landline.
The other night, I got a call on it, and when I answered there was some weird squealing on the line.
When I went down to the room where the Linksys modem is, it was making the same sound.

If I power down the router and then power it back up , the sound is gone, until I try and use the landline, then it's back (and on the phone line too) until I power it off again.

Would this be a screwed internal part of the modem / router?
Internet is still going fine.

Create new topic
4897 posts

Uber Geek
+1 received by user: 1533


  Reply # 478606 7-Jun-2011 16:22
Send private message

If the AG310 is a few years old, it may be a failing power supply. These are external units, and seem to be one of the most common failure points.

See if you can try a new one - doesn't need to be Linksys, so long as the voltage and polarity are the same, and the current rating is at least as high.



535 posts

Ultimate Geek
+1 received by user: 35


  Reply # 478618 7-Jun-2011 16:49
Send private message

Thanks.

The noise is defiently coming from the router itself (roughly in the middle of the box, bottom side)

I'll give the new psu a go.






535 posts

Ultimate Geek
+1 received by user: 35


  Reply # 479079 8-Jun-2011 19:28
Send private message

New PSU fixed it.

I measured the old one, and it was outputting the right voltage, but 3.4 amps rather than the 1.25 on the label.


4897 posts

Uber Geek
+1 received by user: 1533


  Reply # 479229 9-Jun-2011 10:42
Send private message

Glad to hear it!

How were you measuring the current? The router should only draw as much as it needs, and I wouldn't think it would get anywhere near 3.4A



535 posts

Ultimate Geek
+1 received by user: 35


  Reply # 480779 13-Jun-2011 22:09
Send private message

I just used a multimeter. The Linksys supply didn't actually list the Amps but was 12v / 15W.


423 posts

Ultimate Geek
+1 received by user: 8


  Reply # 480788 13-Jun-2011 22:36
Send private message

JonnyCam: I just used a multimeter. The Linksys supply didn't actually list the Amps but was 12v / 15W.


Do you mean you just connected the multimeter to the two terminals of the power supply and measured the current? That effectively short circuits the power supply, and won't tell you anything useful.

You need to connect the multimeter in series with the AG310 to measure the current, and in parallel to measure the voltage. It's quite difficult to do with the standard connectors, and probably not worth the hassle.

Also, for a DC power supply you can calculate the max current by just dividing the power over the voltage. At 12V/15W, max current should be 1.25A.



535 posts

Ultimate Geek
+1 received by user: 35


  Reply # 481248 14-Jun-2011 23:14
Send private message

Yeah, I calculated the amps at 1.25 like you say, but never really thought of the short circuit across when measuring current.

Not that I really needed to know what was wrong with the power suppy - it wouldn't help me, dc supplies are cheap and have heaps laying around.

Was just more interested as to why all of the other parts of the router were working, but not the phone because of the power supply.

4897 posts

Uber Geek
+1 received by user: 1533


  Reply # 481543 15-Jun-2011 17:31
Send private message

JonnyCam: Was just more interested as to why all of the other parts of the router were working, but not the phone because of the power supply.


Most likely because that loads up the power supply the most, as it is having to also supply sufficent power to make the phone itself go.

Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Microsoft Dynamics 365 Business Central launches
Posted 10-Jul-2018 10:40


Spark completes first milestone in voice platform upgrade
Posted 10-Jul-2018 09:36


Microsoft ices heated developers
Posted 6-Jul-2018 20:16


PB Technologies charged for its extended warranties and warned for bait advertising
Posted 3-Jul-2018 15:45


Almost 20,000 people claim credits from Spark
Posted 29-Jun-2018 10:40


Cove sells NZ's first insurance policy via chatbot
Posted 25-Jun-2018 10:04


N4L helping TAKA Trust bridge the digital divide for Lower Hutt students
Posted 18-Jun-2018 13:08


Winners Announced for 2018 CIO Awards
Posted 18-Jun-2018 13:03


Logitech Rally sets new standard for USB-connected video conference cameras
Posted 18-Jun-2018 09:27


Russell Stanners steps down as Vodafone NZ CEO
Posted 12-Jun-2018 09:13


Intergen recognised as 2018 Microsoft Country Partner of the Year for New Zealand
Posted 12-Jun-2018 08:00


Finalists Announced For Microsoft NZ Partner Awards
Posted 6-Jun-2018 15:12


Vocus Group and Vodafone announce joint venture to accelerate fibre innovation
Posted 5-Jun-2018 10:52


Kogan.com to launch Kogan Mobile in New Zealand
Posted 4-Jun-2018 14:34


Enable doubles fibre broadband speeds for its most popular wholesale service in Christchurch
Posted 2-Jun-2018 20:07



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.