Power Issue with Router

Power Issue with Router

PostBy: Richard S. On: Mon Jul 29, 2013 7:52 pm

Went to go on the internet and no connection. :shock: Oh noooooooooooooooooooooooo!

Checked the router and no lights at all. After messing with it for a while I was able to get it to come on after disconnecting power for some time, maybe 5 minutes. Mine has a regular power switch, if I turn it off and back on no lights. If i disconnect and immediately reconnect still no lights. I have to disconnect it from the power supply and let it sit there for while, reconnect and I get lights.

The power supply for the router is 12 volts and 5amps. I checked with a multimeter and I'm getting 12.2 volts. Shouldn't the volts be higher? I checked another 12volt supply and that one is like 16 volts.

The next largest one I have is 1.2 amps so I can't swap them out.

Note I upgraded firmware after getting it going again and that had no affect. Model is netgear R6300. Probably a bad supply?
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

Re: Power Issue with Router

PostBy: 2001Sierra On: Mon Jul 29, 2013 9:32 pm

12.2 volts should be fine. Input impedance of the meter is no load. A load condition truly indicates power supply output. I would feel better with a supply rated at 12 volts supplying 12.2 volts vs a 12 volt supply reading 16 volts. Some switching power supplies fold back with a load, maybe it reset after the lengthy disconnect. Such a long time should really not be necessary, but stranger things have happened.
2001Sierra
 
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Re: Power Issue with Router

PostBy: Richard S. On: Mon Jul 29, 2013 9:39 pm

2001Sierra wrote:Some switching power supplies fold back with a load, maybe it reset after the lengthy disconnect. Such a long time should really not be necessary, but stranger things have happened.


This is repeatable, If I go and turn the power off right now I'm going to have to disconnect it from the power supply and wait.
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite


Re: Power Issue with Router

PostBy: grumpy On: Mon Jul 29, 2013 9:57 pm

Rich, I would be really surprised if the router even comes close to one amp, and if your supply really puts out 5 amps at 12 volts it's pretty big.
grumpy
 

Re: Power Issue with Router

PostBy: 2001Sierra On: Mon Jul 29, 2013 10:16 pm

I work at a College and my group works on thousands of laptops, and the only sensible way to test a "brick" is substitution. More amps is always better than less, but desperate times call for desperate measures. :shock:
2001Sierra
 
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Re: Power Issue with Router

PostBy: rockwood On: Mon Jul 29, 2013 10:35 pm

I'm surprised at that power output, usually it's only in mA for a router power adapter.

I would try a radioshack type store for a suitable replacement. You might have trouble finding one with that high amperage though...and if you do it might be kinda spendy :(
rockwood
 
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Re: Power Issue with Router

PostBy: grumpy On: Mon Jul 29, 2013 10:36 pm

2001Sierra wrote:I work at a College and my group works on thousands of laptops, and the only sensible way to test a "brick" is substitution. More amps is always better than less, but desperate times call for desperate measures. :shock:



In my neck of the woods we call them Wallwort's...
grumpy
 

Re: Power Issue with Router

PostBy: Richard S. On: Mon Jul 29, 2013 10:59 pm

grumpy wrote:Rich, I would be really surprised if the router even comes close to one amp, and if your supply really puts out 5 amps at 12 volts it's pretty big.


It's not unusually large but that is what it says. Note that this is larger router with USB etc.
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

Re: Power Issue with Router

PostBy: grumpy On: Mon Jul 29, 2013 11:03 pm

Richard S. wrote:
grumpy wrote:Rich, I would be really surprised if the router even comes close to one amp, and if your supply really puts out 5 amps at 12 volts it's pretty big.


It's not unusually large but that is what it says. Note that this is larger router with USB etc.


Read the label on the router, it will state the requirement.
grumpy
 

Re: Power Issue with Router

PostBy: Richard S. On: Tue Jul 30, 2013 12:21 am

12v 5A on the router.
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

Re: Power Issue with Router

PostBy: mozz On: Tue Jul 30, 2013 5:08 pm

If it has usb 3.0 they are meant to handle almost 1 amp each(900ma)at 5 v, so 2 outlets is about 2 amps. The power supply has a reserve in case you have the usb ports fully loaded down. The router itself probably uses 1 -2 amps. 802ac also has 5 ghz dual band simultaneous so its gonna use more power than a older 802n,ab .
mozz
 
Stoker Coal Boiler: Axeman Anderson 1982 AA-130 Steam

Re: Power Issue with Router

PostBy: grumpy On: Tue Jul 30, 2013 6:29 pm

Well there ya go, guess you need 5 amps to be safe.
grumpy
 

Re: Power Issue with Router

PostBy: rberq On: Tue Jul 30, 2013 9:20 pm

Richard S. wrote:The power supply for the router is 12 volts and 5amps. I checked with a multimeter and I'm getting 12.2 volts. Shouldn't the volts be higher? I checked another 12volt supply and that one is like 16 volts.

When you're at the store replacing the troublesome supply, buy two so you can throw out the one that produces 16 volts.
16 vs. 12 might not be enough to fry something, but then again it might. You wouldn't wire your refrigerator into a 220 circuit.
Have extra amperage capacity won't hurt, the device will only use what it needs as long as the voltage is correct.
I have had good luck with power supplies from Radio Shack. The cheapo ones I got from Wal Mart were all over the place, either way too little or way too much voltage, but never right.
rberq
 
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Re: Power Issue with Router

PostBy: Richard S. On: Tue Jul 30, 2013 11:31 pm

rberq wrote:
Richard S. wrote:When you're at the store replacing the troublesome supply, buy two so you can throw out the one that produces 16 volts. .


It's just an extra I have laying around. ;)
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

Re: Power Issue with Router

PostBy: mozz On: Wed Jul 31, 2013 4:23 pm

Most wall wart power supplies are higher than the rated output. I can almost bet once you put a load on the 16v it will go down to 12-13v. Cheap supplies do not use a voltage regulator, just a transformer, 2 or 4 diodes and a filter cap. Better supplies use a regulator and a better designed circuit. Switching power supplies are even more expensive(sometimes) and more complex but will work on 110-220 input without doing anything. Put your meter on AC and see what the output measures, that would be ac ripple and lower is better. I don't think the problem is the power supply. Maybe try Anandtech forums?
mozz
 
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