Help - is my wrt54g V1.0 broken?

Discussion in 'Cisco/Linksys Wireless Routers' started by daverichards, Apr 3, 2006.

  1. daverichards

    daverichards LI Guru Member

    Hi all,

    Im praying someone can help here. I have a WRT54g V1.0 (serials starts...CDF1)

    I can home this weekend to find only the diag light red and the power light green, i've treid resets and everything. It wont do any kind of reset!

    I was kindly given a link to a document on this site about shorting a pin but the board in my router looks rather different, it has a smaller board mounted inside it, in what i can only describe as a similar connection that a laptop RAM holder has?

    Is there another way for this router, or do i need to buy a new one.

    Please can someone help :sad:
  2. windsurfer

    windsurfer Network Guru Member

    If the router has worked in the past with this software, I would check the power supply first.

    A friend gave me a V1 that would not work. I connected up another 5V supply and it started working correctly.

    About the time the V1 was being built, there was a large number of defective capactors manufactured. This caused me to check for 5volts coming out of the cord on the wall wart. It had 5volts until it was loaded and then it went to about a volt.

    I then took a knife and opened the wall wart. The largest capacitor in that box was bulged on the top. I replaced it with a low ESR capacitor and it started working correctly.

    You probably should change all caps in that box but the big one was the one causing my unit to not work.

  3. daverichards

    daverichards LI Guru Member

    Oh right i'll give that a try then! I'll have to find one somewhere though!!
  4. Toxic

    Toxic Administrator Staff Member

  5. daverichards

    daverichards LI Guru Member

    There is a chip that sights slightly under yes. Looks like the intel on in that pic without saying intel. How do i know which is pin 15-16 though? There are no numbers?
  6. Toxic

    Toxic Administrator Staff Member

    there should be a number 1 on one of the corners and the highest number at the other end.
  7. daverichards

    daverichards LI Guru Member

    Bank 0 and u8 is all i got mate, no numbers at all! :cry:
  8. Toxic

    Toxic Administrator Staff Member

    maybe no on the chip itself but the surrounding edges of the PCB board where the chip is soldered. i used to have a v1 and it was numbered on one corner at least
  9. daverichards

    daverichards LI Guru Member

    nope none on the chip or pcb!!! i'll get a photo of it later!
  10. daverichards

    daverichards LI Guru Member

  11. theprophe

    theprophe LI Guru Member

    just bumping this thread as i have the same problem and board, no number on teh chip, just a u8 on 1 corner of the pcb board and a green dot on teh chip at the same corner. there seems to be 24pins on each side of the chip also
  12. Toxic

    Toxic Administrator Staff Member

    tbh i think it was where the U8 is is the side you need and the small triangle was pin 1.
  13. theprophe

    theprophe LI Guru Member

    so its still pin 15-16 even though this chip has many more pins? The problem with mine might be a power problem though. I have used the router for years without problems, But after usign p2p software my router kept resetingbut now ts locked , when i power on, the red and green ight are very dim, and it takes around 5-10 minutes to increase to normal intensity.
  14. Toxic

    Toxic Administrator Staff Member

    if you think its a PSU then get a replacement PSU.
  15. vincentfox

    vincentfox Network Guru Member

    Replacement PSU are easy to find. You don't have to have a Linksys unit specifically. Just make sure it's right voltage, right size connector, and equal or more amperage than original. The Linksys commonly use an M-size connector and just about any electronics store will have generic wall-wart that will work.
  16. theprophe

    theprophe LI Guru Member

    My psp adapter is the right one, unfortunately the plug is different, but even if i get a new psu, i still have to unbrick the unit
  17. envoid

    envoid Network Guru Member

    You might not have to unbrick it if the PSU is dead. Start with the PSU. If the lights are ok with it but is still bricked, then start unbricking process. You're gettign ahead of yourself. :dog:
  18. theprophe

    theprophe LI Guru Member

    well i finally got around to getting a new powersupply, and thats what the problem was, i have now instaled dd-wrt and everything is perfect
  19. phecksel

    phecksel LI Guru Member

    My CDF0 is exhibiting the same symptoms. Is it worth replacing the power supply, and if so, where's a good place to get one. Parts Express has some 4.5V & 6.0 units, but no 5.0V. Are either of these acceptable?

    Bought Version 6 last night, it works, but I always wanted to update the firmware.

    Thank you
  20. ccbee

    ccbee LI Guru Member

    RE-Help - is my wrt54g V1.0 broken?

    Hello, dont know if you have sorted things out, if not try cleaniig the contacts on the small radio board with 100% Isopropanol, if that does not work try another psu rated at 1-2 volts higher than the standard psu it works sometimes, the standard psu sometimes cause the on board regulator to develop faults after a few years of use, good luck!
  21. Ponderous

    Ponderous LI Guru Member

    Source for hardware information

    This site is pretty good at providing the kinds of hardware information I believe you are discussing (Pin locations on embedded chips)

    Hope this is helpful
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