radio chip replacement
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From: JIMMIE on 23 Jan 2010 22:27 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
From: atec 77 "atec on 23 Jan 2010 22:36 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
From: Jeff Liebermann on 24 Jan 2010 00:21 On Sat, 23 Jan 2010 19:27:36 -0800 (PST), JIMMIE <jimmie68(a)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(a)cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558
From: alexd on 24 Jan 2010 14:48 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(a)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
From: Jeff Liebermann on 24 Jan 2010 15:37
On Sun, 24 Jan 2010 19:48:47 +0000, alexd <troffasky(a)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(a)cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |