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I have a TP-LINK router. Newest firmware (Firmware version: 4.7.11 Build 101102 Rel.60376n, Hardware version: WR340G v3 081520C2). It has connected cable from ISP to the WAN port and broadcasts the Internet via WI-FI in my house. I have a few computers / smartphones that use it.

The problem is that after a few hours of work the LAN network stops working (devices don't see each other, on wireless connection). However, the Internet still works. I cannot use wired connection as all of my devices are laptops / smartphones and it will be highly inconvenient.

When I try to enter the router configuration page, it does not respond. Even ping does not work (waiting time exceeded). Pings to other devices does not work too.

Network configuration (on a host that I'm working right now):

IPv4 address. . . . . . . . . . . :
Subnet mask . . . . . . . . . . . :
Default gateway . . . . . . . . . :

The LAN network "works" for a few hours after I reboot the router by switching the power off and on.

Is there anything I could try to do instead of replacing the device with a new one?

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Did you check for firmware updates for the router? Or search to see if this is a common issue with this router model? – CharlieRB Jan 3 '14 at 15:04
Yes, before I asked this question I had installed the newest firmware from… I could not find any similar issues in the web. – fracz Jan 3 '14 at 15:36
You should update your question with that information so others know what you've done without having to ask. – CharlieRB Jan 3 '14 at 15:37
when LAN stops do you mean Wi-Fi or Wired connection? If only Wireless you should connect PC to it using network cable and check the settings. – Vladimir Oselsky Jan 3 '14 at 20:22
Have you also reset it to default via software AND the hardware button it has? Sometimes they just get stuck in a bad state... I checked and it is not listed as supported by dd-wrt so that option is unfortunately not available. – Andrew M. Jan 22 '14 at 23:17

Heat can make a failing device worse. An easy test is to open the case (if possible), blow out any dust and use a regular house fan to cool it.

If that works, I would suggest replacing the unit soon. Sometimes the fan will buy a little time though.

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I have also seen devices fail because of low temperatures. Utah is fun like that! – Andrew M. Jan 22 '14 at 23:49

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