Weak Wireless Connection

Hi,
I have a Toshiba L20 pro lap top.
I have today replaced the hinges and part of the silver base trim.
During which I re-fittted the wireless LAN.
Everything now works fine but the signal strength on the wireless connection is seriously weak.
We have to be in the same room as the router to get a signal.
I have checked the connections and they seem fine.

Any pointers would be greatly appreciated.

Dave

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