WNDR3700 and Samsung TV: wifi but no Internet

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RussNZ wrote:

 

Apologies re: orange light detail - it is amber meaning that the speed is 100 Mbps or 10 Mbps Ethernet connections. Curious becuase we are on 'ultrafast broardband connection'.

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The colour has nothing to do with your internet service. (Lucky bugger to have that speed.) It is about the technology in the TV. It doesn't need GB speeds, even for HD stuff, so the people who designed it stuck with the cheaper 100 Mbps standard. (They do the same thing with wifi. 2.4 GHz rather than 5GHz, because it is more than fast enough and travels further.)

That's fine. You can ignore that LED. PLug in something fast and it will be white.

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RussNZ wrote:

 

however, all are experiencing either very slow internet or timing out / no connection (whilst showing full connection to the router). I have been running my iPhone solely on wifi and another iPad with only wifi functionality - both regularly time out or say they are not connected to internet and after 30 seconds to a minute magically start working fine.

That may be the heart if the problem. Something amiss in the router. Fix that and the TV may play ball.

I'd start from scratch and try to sort that one out. Maybe something is bust. Med it and the TV may play ball again.

This brings us back to two bits in your first message. It talks about two things. WNDR3700 (subject) and R7000 (footer). That turns into R7000 lower down. What do you own?

The R7000 is in firmware hell for some people. But we don't know which version you have. What firmware version do you have on the device?

A number is more useful than "the latest". (It may not be by the time people read this.) There can also be newer versions, or "hot fixes", that do not show up if you check for new firmware in the browser interface.

It might also help if you told people what the modem is in front of this router. The model number could be useful. Is it, by any chance, also a router, with a set of LAN ports on the back?

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I'm clearly not an expert but it feels like the powercut has caused a change in settings of the router(?).

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I have bad news for you. Many of the volunteers here, including me, can't claim to be experts. We've just seen a lot of problems over the years and can sometimes spot likely  causes.