Problem with LAN ports on router

Discussion in 'General Electronics Chat' started by xxxyyyba, Jun 19, 2016.

  1. xxxyyyba

    Thread Starter Member

    Aug 7, 2012
    249
    2
    My router Dlink G684T began to behave strangely. I can't establish connection with it using LAN. Even if I establish connection, when I open router Web interface, I lose connection after few seconds. Here is router board:

    [​IMG]

    [​IMG]

    You can see there is one bad capacitor (1000uF, 25V). Can it be reason for strange behaviour of LAN ports? Is there any other component which can make problems?
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,088
    3,027
    Every component you see could potentially cause a problem, or it could be something you cannot see, the software.

    That said, one failed capacitor is certainly enough to bring down the entire device. It's in there for a reason, to perform a function, and you can be pretty sure it is no longer performing that function.

    Routers are cheap. I suggest buying a new one and spending your time on battles you may win.
     
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  3. xxxyyyba

    Thread Starter Member

    Aug 7, 2012
    249
    2
    Thanks for answer. I will first try to fix it by replacing capacitors. If this does not solve problem, I will buy new router.
     
  4. Roderick Young

    Member

    Feb 22, 2015
    408
    168
    If it has just begun to behave intermittently, I bet that the trouble is exactly that capacitor. If you're buying a new capacitor, might as well get several. And if replacing that one troublemaker fixes the issue, consider replacing others near it of like kind.
     
  5. dl324

    Distinguished Member

    Mar 30, 2015
    3,211
    619
    The final failure mode of most electrolytic caps is open; so you could try tacking a new cap across the suspected bad one to see if it helps. If it does, you've found the problem. If it doesn't, still worth seeing if replacing it fixes the problem.

    Most things aren't worth fixing these days. If I can fix it, fine. If I can't, it's usually more cost effective to buy a new one than to pay someone to repair it.
     
  6. WBahn

    Moderator

    Mar 31, 2012
    17,715
    4,788
    My vision definitely isn't what it used to be. Which capacitor in those photos is bad? Is it the brown one near the top center (the top looks puffed up)?
     
  7. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,377
    494
    I did not notice it on first pic. But second pic makes it easier to see.


    222.jpg
     
  8. WBahn

    Moderator

    Mar 31, 2012
    17,715
    4,788
    Thanks. That's the one I was figuring it was.
     
  9. Techno Tronix

    Member

    Jan 10, 2015
    140
    10
    As dl324 noticed the bad capacitor, you should go with new components to solve this issue.
     
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