Talk to live chat and they entered my MAC address and serial number. After the modem is powered up, the receive led flashes for about 30 second and then stay solid. The send led just keep flashing forever. on-line led never lite up. Is something wrong with my modem?
It's not actually synchronized with the system. This could be a signal / line problem or the modem. Where did you buy it used ? (never a good thing with a cable modem). Perhaps it is defective. They won't be able to actually provision it for service until and unless it is fully synched with the system.
*Barring any RF signal / modem hardware issues*, a modem will obtain block sync with the system (send, receive, and online lights lit solidly) before it is even provisioned for service. The lights will not change due to provisioning.
Tested the modem neighbor's house and the on-line led lit up. So there is nothing wrong with my modem and it is Comcast who did not send a signal to my house. The strange thing is some one ( I guess their tech ) has came to my house and removed the splitter that was inside the grey box and connect directly to the cable that come out of my house. I know because there was a splitter there earlier last week.