WRT54GL can't connect to modem

Hello,
My WRT54GL has been working fine for 6 month until recently. It started to drop internet connection and can't connect to the modem once in a while (like every 1-2 week). When this happens, the router's status page shows that it can't renew the IP. Physically the PC light of the modem is not lit even though the modem is connected to the router's WAN port. If I connect my PC directly to the modem the PC light lit up immediately. I also tried to connect the router's WAN port to a switch to test connectivity and the switch port light didn't light up either. Is it possible that I have a faulty WAN port?
Last night when it happened again, I tried resetting my modem and router, cloning Mac address, changing MTU to 1400 etc but no luck. The PC light of the modem just refuse to light up which indicate there is no connection between router and modem. However the strange thing is that after I leave the router off for a night, connecting it back to the modem works again.
Does anyone else has similar problem?
Thanks Alan

Upgrade the firmware on the router to the latest version hope this will resolve your issue.!!

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al_mathews wrote:
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HT1178 Do I want to create a new wireless network or join my current network? I can't connect an ethernet cable to the Mac / printer and to the wireless modem at same time - in two different rooms.

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How is the printer connected and to what?
I am not sure why you need such quick help.. this is all minor setup stuff.. and 18months in todays world is like permanent man.
Your multiple A, B, C are more confusing than helpful.
The best choices without more info.. are to replace the existing wireless router with the TC. ie your option B.. but how to do this depends on the type of connection. Is it cable or adsl? Can you easily bridge the existing modem router.. if that is what it is?
Think carefully in the ideal world what would you like..
and what do you have..
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