Netgear AC1750 R6700v2 has no internet connection

[Hunnicutt]

    The last few days the internet has been cutting in and out every few minutes. I first thought it was our local rural provider but it seems now thats its my router. We are on fiber and dont require a modem. With everything plugged into the router correctly the internet LED will turn amber briefly then go dark and stay dark. I have no problem connecting to the router but there is no output  on either wifi or hard wired. When I bypass the router and plug cord into the pc directly i have no issues.  I ran a speed test (89.4mbps down 32.5up 47ms ping) and a Ping over time test. I ran it 5 minutes and had zero loss and average 22ms ping. The firmware is up to date v1.2.0.88.  I have not done a factory reset yet.

[Hunnicutt]

UPDATE:  I shut router down and unplugged power and all cat5. I left it shut off for a few minutes and then plugged router power back in and turned it on to complete startup. I then plugged in the single "in" cat5 cord. I immediately got an amber light on internet but only briefly then it went dark. It started coming on and off so i timed it for a few minutes.The amber light would be on for 10 seconds then dark 20-30 seconds.

[FURRYe38]

What Firmware version is currently loaded?
What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?

If you factory reset the router by pressing the reset button, with out the router connected to anything, does the router turn ON and blink as per user manual or installation guide? 

Try a different power adapter with same volts and amps on stock adapter...

CAT6 lan cable is recommended. 

[Hunnicutt]

firmware is  v1.2.0.88

After factory reset

power steady on white

internet goes amber for 10 seconds and off 20-30 seconds and continues this pattern 

2.4ghz on steady white

5ghz steady on white

wifi on/off button steady white

im trying to find another power adapter.

Here is a picture of where the cat5 comes into the house. no modem in house bu, this is powered by a batteryback up inside our house

exthousecable that comes from the exterior box on the house goes directly to router.

[FURRYe38]

Might try to power OFF the ONT for 1 minute then back ON. 
Any chance to try and run a different long patch CAT6 cable from the ONT to the ROUTER to see if anything changes? 

You might check the user manual for LED behaviors. 

[Hunnicutt]

I dont see how i would power cycle the ont. I can only unplug the battery back up, inside the house. 

I dont have cat6 cable.

the lights are correct according to manual.

when i bypass router and wire directly to pc i have no issues. I think that would eleminate the cat5 and ont being a problem would it not?

[FURRYe38]

I suppose. Only thing would be to try the NG router at a different location, say friend, family or nieghbors place to see if the problem follows, it so, the router maybe bad and needs replacing. Only other item would be to test a different power supply with same volts and amps. 

[wcalifas]

You can also try doing a hard reset, pressing the reset button with a paper clip for 30 seconds while its powered on. It will reset your router back to factory default. Maybe it just needs a reset, try it out and let us know what happens.

[Kitsap]

Just another thought.  Since you Optical Network Terminal (ONT) has four output ethernet ports, have you tried to put your router in Access Point (AP) mode?  After you configure into AP mode, restart your router and check for external connection to the internet.

Calix also makes an indoor version of the same ONT.