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Thread: radio chip replacement

  1. #1
    JIMMIE
    Guest

    radio chip replacement

    Is it practical to replace the radio chip in a Linksys WRT54GS version
    2 router. I have acquired two that were fried from running the power
    set too high. Rest of the router works OK and they are running DD WRT
    firmware. Setup shows transmit was set to max on both routers.

    Jimmie

  2. #2
    atec 77
    Guest

    Re: radio chip replacement

    JIMMIE wrote:
    > Is it practical to replace the radio chip in a Linksys WRT54GS version
    > 2 router. I have acquired two that were fried from running the power
    > set too high. Rest of the router works OK and they are running DD WRT
    > firmware. Setup shows transmit was set to max on both routers.
    >
    > Jimmie

    considering the new price it's possible but uneconomical

  3. #3
    Jeff Liebermann
    Guest

    Re: radio chip replacement

    On Sat, 23 Jan 2010 19:27:36 -0800 (PST), JIMMIE <jimmie68@gmail.com>
    wrote:

    >Is it practical to replace the radio chip in a Linksys WRT54GS version
    >2 router. I have acquired two that were fried from running the power
    >set too high. Rest of the router works OK and they are running DD WRT
    >firmware. Setup shows transmit was set to max on both routers.


    Try resetting the firmware to defaults before you attack. Miracles
    are often useful.

    The power amp is mostly likely blown. 250mw out will not hurt the
    power amp at room temperature, but will fry the chip with a high
    ambient temperature or if air circulation is somehow blocked. At
    250mw out, the chip dissipates about 1.5 watts. At 50C/watt, the case
    will run at:
    T = 25C + (1.5watts * 40C/watt) = 100C
    That's rather hot.

    I've replaced 2 of these chips with 50% success. The first, I
    attempted with a soldering iron and solder wick. I trashed the board.
    The 2nd I did with a hot air soldering iron, which was both easier and
    worked just fine.

    I'm not sure which chip is used in the version 2 hardware. My
    guess(tm) is a SiGe 252x chip such as:
    <http://www.sige.com/uploads/datasheets/192-DST-01_SiGe_SE2523BU_Datasheet_Rev_1p3_AP_May-26-2009.pdf>
    I have a v2 in my palatial office and can check the chip number if
    necessary. You'll have to open up your router anyway, so you might as
    well do the part number research yourself.


    --
    Jeff Liebermann jeffl@cruzio.com
    150 Felker St #D http://www.LearnByDestroying.com
    Santa Cruz CA 95060 http://802.11junk.com
    Skype: JeffLiebermann AE6KS 831-336-2558

  4. #4
    alexd
    Guest

    Re: radio chip replacement

    Meanwhile, at the alt.internet.wireless Job Justification Hearings, JIMMIE
    chose the tried and tested strategy of:

    > Is it practical to replace the radio chip in a Linksys WRT54GS version
    > 2 router.


    Some routers used to have MiniPCI cards with the radio on, in which case
    it's eminently possible. I'm not sure if that model was one of them,
    however.

    --
    <http://ale.cx/> (AIM:troffasky) (UnSoEsNpEaTm@ale.cx)
    19:48:08 up 3 days, 22:49, 5 users, load average: 0.07, 0.57, 0.76
    DIMENSION-CONTROLLING FORT DOH HAS NOW BEEN DEMOLISHED,
    AND TIME STARTED FLOWING REVERSELY


  5. #5
    Jeff Liebermann
    Guest

    Re: radio chip replacement

    On Sun, 24 Jan 2010 19:48:47 +0000, alexd <troffasky@hotmail.com>
    wrote:

    >Meanwhile, at the alt.internet.wireless Job Justification Hearings, JIMMIE
    >chose the tried and tested strategy of:
    >
    >> Is it practical to replace the radio chip in a Linksys WRT54GS version
    >> 2 router.

    >
    >Some routers used to have MiniPCI cards with the radio on, in which case
    >it's eminently possible. I'm not sure if that model was one of them,
    >however.


    Hardware v1.0 and 1.1 have a MiniPCI RF card inside. All the other
    mutations have the wireless devices on the main board, usually buried
    under a metal shield.

    Random photos:
    <http://www.flickr.com/photos/tags/wrt54g>


    --
    Jeff Liebermann jeffl@cruzio.com
    150 Felker St #D http://www.LearnByDestroying.com
    Santa Cruz CA 95060 http://802.11junk.com
    Skype: JeffLiebermann AE6KS 831-336-2558

  6. #6
    Jeff Liebermann
    Guest

    Re: radio chip replacement

    On Sat, 23 Jan 2010 19:27:36 -0800 (PST), JIMMIE <jimmie68@gmail.com>
    wrote:

    >Is it practical to replace the radio chip in a Linksys WRT54GS version
    >2 router. I have acquired two that were fried from running the power
    >set too high. Rest of the router works OK and they are running DD WRT
    >firmware. Setup shows transmit was set to max on both routers.


    I think I know why the routers overheated:
    <http://www.flickr.com/photos/jcuthrell/2043135347/>

    --
    Jeff Liebermann jeffl@cruzio.com
    150 Felker St #D http://www.LearnByDestroying.com
    Santa Cruz CA 95060 http://802.11junk.com
    Skype: JeffLiebermann AE6KS 831-336-2558

  7. #7
    Jeff Liebermann
    Guest

    Re: radio chip replacement

    On Sun, 24 Jan 2010 12:37:24 -0800, Jeff Liebermann <jeffl@cruzio.com>
    wrote:

    >Hardware v1.0 and 1.1 have a MiniPCI RF card inside. All the other
    >mutations have the wireless devices on the main board, usually buried
    >under a metal shield.


    Argh. Only the 1.0 version has a MiniPCI card. The 1.1 and up are on
    the motherboard.
    <http://www.linksysinfo.org/forums/showthread.php?t=47124>
    Sorry(tm).


    --
    Jeff Liebermann jeffl@cruzio.com
    150 Felker St #D http://www.LearnByDestroying.com
    Santa Cruz CA 95060 http://802.11junk.com
    Skype: JeffLiebermann AE6KS 831-336-2558

  8. #8
    JIMMIE
    Guest

    Re: radio chip replacement

    On Jan 24, 6:02*pm, Jeff Liebermann <je...@cruzio.com> wrote:
    > On Sun, 24 Jan 2010 12:37:24 -0800, Jeff Liebermann <je...@cruzio.com>
    > wrote:
    >
    > >Hardware v1.0 and 1.1 have a MiniPCI RF card inside. *All the other
    > >mutations have the wireless devices on the main board, usually buried
    > >under a metal shield.

    >
    > Argh. *Only the 1.0 version has a MiniPCI card. *The 1.1 and up are on
    > the motherboard.
    > <http://www.linksysinfo.org/forums/showthread.php?t=47124>
    > Sorry(tm).
    >
    > --
    > Jeff Liebermann * * je...@cruzio.com
    > 150 Felker St #D * *http://www.LearnByDestroying.com
    > Santa Cruz CA 95060http://802.11junk.com
    > Skype: JeffLiebermann * * AE6KS * *831-336-2558


    Thanks but now that I see the size of the chip.....


    Jimmie

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