i have an SB4200 SURFboard cable modem (as pictured here. when i turn on the modem, all the lights which say power, receive, send, online, and activity are supposed to come on; and when i turn it off, standby is supposed to light up. but today, when i tried to turn on the modem, only the power and receive lights come on; and when i turn it off, those 2 lights stay on and standby stays off.
this has happened once before when my mom disconnetced the modem, but we’ve check all the wires, and they are connected properly. my mom even cleaned all the connections with duster. so, what’s wrong with my modem (i’m actually renting it which is worse.); and how can i fix it?