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My modem won’t stop making a ringing sound when on. This started around a year after first using the modem.

Is it in warranty? If so, contact support. If not, try a different power supply for it. usually its a capacitor in the power supply

 


If the problem persists after checking with different power outlets and power cords, I would suggest visiting www.arris.com/consumersupport for further assistance.


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