Xfi Gateway Modem Power Light

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@MannyMack wrote:
Plugged in my recently received Arris TG1682G modem in functioning power outlets. Should there be a power light showing? If not, is the device defective and what is the next step to get a functioning Xfi Gateway modem?

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That's not a good sign. There are several LEDs in the front of the XB3 (TG1682G) that should light up, including one for power. 

You can bring it down to your nearest Comcast store for an exchange, or you can arrange for a swap by phone using (800) XFINITY or by chat.

Or even here, if you so wish, in which case I'll have a Comcast rep take it from here.