WRT54G v1.0, no power up, AC Adapter Good, any fix?

Discussion in 'Cisco/Linksys Wireless Routers' started by blastradius, Feb 14, 2006.

  1. blastradius

    blastradius Network Guru Member

    So I have a WRT54G v1.0 that I was running Tofu on.
    One morning I find that the router is not powered up.
    I put the multi-meter on the AC adapter and it's putting out the necessary 5v so I figure something is fried on the board itself. There isn't anything obviously burnt out on the board so is there any common part that goes out on the V1.0s?
  2. t4thfavor

    t4thfavor Network Guru Member

    ping it so that the pings dont stop

    in linux it is ping -f but i am not sure what it is in windows

    then plug it in if the pings dont come back for about 2 secs or so (3 pings) it is toast and i cant help anymore.

    if you get a response from the pings then look up de-bricking stuff
  3. blastradius

    blastradius Network Guru Member

    Does a bricked router look like it doesn't even power up? I mean no LEDs light up or anything.
  4. Guyfromhe

    Guyfromhe Network Guru Member

    No, it's always got at least a power light, if theres no power light the router isn't getting any power, you can give another power brick a shot just to be 100% sure but it's likely toast, i've never heard of something on the board dying that would cause it to not get power, you could check where the power is being lost in the power supply with your multimeter if you want to investigate otherwise just replace it.
  5. blastradius

    blastradius Network Guru Member

    Thanks Guyfromhe.
    I guess I was just hoping something could be salvaged. Anyone need the antennaes or the 5v AC Adapter or the mini-pci radio?
  6. __spc__

    __spc__ Network Guru Member

    I'll take the 5v adaptor off you....
  7. lolol

    lolol Guest


    yesterday, no more wifi access when i came back home...
    i thought my WRT had burned... (always turned ON since Nov 2003)
    reading this post make me think about the power supply.
    I just tested with another power adaptor... good news my WRT54G 1.0 is alive !!! :cheering:


    now, i have to find another power adapter...
    5V 2A

    unfortunately, the one of WRT54GS V4 has a different power adaptor
    12V 1A
  8. Galne

    Galne Network Guru Member

    Whne the Switched AC adapter ar a little bit dead they can give normal voltage unloaded. But when you put load on them the don´t manage enymore. So, probley a new AC adapter salvages the problem.. Just have hade that fault on may D-Link DI-604, so now I´m looking for new hardware.
  9. Guyfromhe

    Guyfromhe Network Guru Member

    i've seen that problem and some weirder ones...
    i've found hardware (routers and switches) that no longer works with the stock adapter and no longer work with their supposed correct voltage, however if you give them and extra 5v or so they spring to life and start working normally again...
  10. p1cunnin

    p1cunnin Guest

    Alternate WRT54g v.1 Power Supply

    Just had my power supply die overnight.

    Don't have a multimeter, but the Linky had no lights.

    The v.1 has the oddball configuration -- a 5V 2000mA power supply and the internal mini-PCI card.

    The substitute power supply that I found is the Radio Shack Adaptaplug Digital Camera Power Adapter (273-1696) for about $27.99. You also need the "N" tip (273-1717) for $4.99. The plug needs to be inserted "tip positive".

    This Adaptaplug power supply is the only one that outputs 2000mA. The voltage is switchable to 5V.

    Seems to be working ok now
  11. i-guy

    i-guy Guest


    Just wanted to say thank you to p1cunnin for his research into the Radio Shack PS. My v1 gave up the ghost after many years of continous operation and that PS brought it right back up.

    Thanks again!
  12. Markie

    Markie Network Guru Member

    Just want to say THANK YOU....Had the same problem with the power supply. Tried a different one and it worked. Thought it was toast. Thank you.
  13. megafrenzy

    megafrenzy LI Guru Member

    My 5V 2Amp supply went bad, the WRT54G V1 was not working, I pulled the supply and measured 5V coming out of it. Not believing it, I pulled the board from the case, plugged it back in and measured the voltage off the board - on the side and back of the power jack, and I was getting 4V.

    Replaced with a 5V 2.5A (regulated switching) supply, works again.
  14. anectine17

    anectine17 Network Guru Member

    Replacement PS

    I've got a v.1 PS (5v, 2a) I'll let go for $15 including shipping. It's a Linksys brand PS. abessey(at)runbox.com

    Edit: SOLD
  15. UbiMea

    UbiMea LI Guru Member

    I had a power supply fail on a Linksys Gigabit Switch; it too was an odd voltage/output, but Linksys shipped a replacement overnight for 12 pictures of George of Washington and few Lincolns.

    I personally wouldn't mess with RadioShack when the OEM is providing parts so reasonably.
  16. jgutz20

    jgutz20 Network Guru Member

    get one at radio shack and someone might change the voltage on ya... less room for error goin linksys
  17. mixxxer

    mixxxer LI Guru Member


    mine died one week ago. went away on vacation, came home few days later and every light on the router was lit. looked like a xmas tree. no connection though. so i unplugged the power and it was dead after that. plug in and the power led would light, very dimly. this is an original v1 from waaaay back.

    i just tossed it in the garbage. gave me an excuse to buy something new. now i wish i had kept it and tried another adapter :(

    so far have tried the wrt54gs, wrt54gc, wrt54gx4 and have just ordered a wrt300n. I keep returning them. none seem to work as well as my original wrt54g....

    o well - it was one of the best purchases i have ever made. got my $ worth out of it...
  18. ccbee

    ccbee LI Guru Member

    Power Supply faults

    Hello Everyone, if you think you have a power supply fault why not do what I do, Dont spend money on expensive replacement PSU's, just get an old computer ATX power supply and convert it to run like a bench PSU, then you have 5V, 7.5V and 12V all at plenty enough amps to power many devices, I've been running three devices like this for over four years with no problems, Just go to Google and type in, "Convert Computer ATX power supply to bench power supply",
    it's not that hard to do, hope this helps someone. :cheer:
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