My NBN modem (Arris CM8200) is going through an endless reboot cycle. The power light comes on followed by Downstream, Upstream both of which eventually stay on, followed by online which just flashes. Online flashes for a while and then the whole cycle starts again, power light followed by downstream etc. I’ve tried powering the modem down, disconnecting the power and HFC cable and then reconnecting but it doesn’t fix anything. I’ve also tried resetting the modem to no success. ... View more