Lighning struck - repair possible?

Discussion in 'Cisco/Linksys Wireless Routers' started by haarp, Jun 1, 2009.

  1. haarp

    haarp LI Guru Member


    I recently had a Lightning strike into our home which killed a few electronic devices, including a Hub my WRT54GL was connected to.
    The router itself seems to have survived the ordeal, I even still could access it from the network. However, it can't log into the WAN anymore, the port seems dead. The WAN and port 1 (or 4, can't remember) LED at front seem to glow when they're not supposed to aswell.

    So I opened that thing up to see what happened to it.


    Looks like only a few resistor and capacitors seem to have gotten damaged. Of course, there might be damage inside the other components aswell, maybe even a delaminated circuit here and there, but I have high hopes of getting this thing repaired.

    Your thoughts? Is there a list anywhere which values the components on a normal WRT54GL have?
  2. computeguy

    computeguy Network Guru Member

    power issue "strike"

    Just buy a new one
  3. haarp

    haarp LI Guru Member

    Gee, thanks. I totally didn't think about that. I mean, there's a reason i named this thread "whether to buy a new router after old one died?", isn't there?
  4. ifican

    ifican Network Guru Member

    So if you have other means of connecting and you are just taking this on as an "i bet i can get this working", i know the feeling and can relate. Though i do not know where you are going to find a schematic with actual component values. I also have to admit i am crazy but this is not one i would take on. I am sure you can find the values but i would say its a pet project you do when you have nothing else requiring time.
  5. haarp

    haarp LI Guru Member

    Yup. I got a new 54GL the next day, before I even checked the damaged one. But I wanna get the old one working again. so this IS a "i bet i can get this working" case :)
    Regarding the schematics and component values, I hoped that someone in this community knew. I mean, those things are so popular, I'm sure somebody bothered to make a list at some point. ;)
    It's only a few SMD components, I doubt that it would be difficult. The router works fine as a switch, boots up, can be used for everything besides connecting to WAN. There's probably not much damage in there
  6. mstombs

    mstombs Network Guru Member

    Assuming you are using a 3rd party firmware such as Tomato (I'm sure you can also do similar in dd-wrt and OpenWRT):-

    If the other ports works you can change one of them into the WAN port with a few "nvram set" commands, and for nothing you will just lose one port!

    Check what the nvram vlan variables are set to with

    "nvram show | grep vlan"

    Expect something like

    vlan0ports=3 2 1 0 5*
    vlan1ports=4 5
    You should be able to remove say 3 from the first one and replace the 4 in the second, you also need to set a special flag in GL

    nvram set manual_boot_nv=1
    nvram commit
  7. haarp

    haarp LI Guru Member

    That is actually a very good idea, thanks :)

    I will be trying that sometime later.
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