NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.

Forum Discussion

clmoore3rd's avatar
clmoore3rd
Aspirant
Oct 10, 2020
Solved

How to confirm C6300 hardware issues?

How can I confirm if my C6300 AC1750 is having hardware problems?   I started having intermittent internet connection issues around May, approximately two years after I purchased the device.  Conne...
  • clmoore3rd's avatar
    clmoore3rd
    Oct 18, 2020

    Unexpected intermittent power reset issue confirmed as a hardware problem.  Just purchased a new modem router and no further intermittent internet troubles.  T3/T4 timeout issues were a byproduct of modem loss of power and reboot, coincidental with power reset events.  New modem has had no T3/T4 timeouts in the event log.

FURRYe38's avatar
FURRYe38
Guru - Experienced User
Oct 11, 2020

Have a friend, family member or neighbor you can take the modem to and test at a different location? 

clmoore3rd's avatar
clmoore3rd
Aspirant
Oct 12, 2020

Thanks, but since the ISP needs the MAC address of the device it's a bit difficult to just try it at another location, with same ISP

 

I've noticed that each time the internet drops out that all the LED lights go out on the front panel of the C6300.  Then, they gradually come back on, and then the spotty internet connection persists.

 

Around the time of the device reset, the Event Log has this entry: 

 No Ranging Response received - T3 time-out

Doesn't seem like a T3 timeout should cause the device to spontaneously reset....  In my experience with embedded controls, spontaneous resets are caused by software bugs, or looming hardware failure.  Something in the line, or signal, shouldn't cause a downstream device reset.

 

If there was a bug in the firmware, I'm sure lots of people would be affected and Netgear would issue an update.  So it's probably not a bug.  Based on my experience I'm tending to think sudden reset of the C6300 is caused by either power supply problem, or modem/router electronics problem.

 

Signals seem to look good, when the internet is working.  And when the internet isn't working, the router also doesn't seem to be working, takes a bit to reboot and all lights to come back online with connection to 192.168.0.1 restored.  At which point the signals look fine again.