REQ: Help w/ Linksys repair

I have a Linksys BEFW11s4 router that needs a couple of IC's replaced
in it. I need someone who has one of these units that is dead or knows
the #'s of the following IC's on the board (these IC's are located
down by the LED's on the board)

U10 (Might be a 74HCT123D)
U11 74HCT125D
U12
U13 74F08
U14 74HCT04D
U15 74HC14D
U16 74F74
U17

These are the part #'s I have. If anyone can help me out, I would
GREATLY appreicate it!!!!

NeonHomer

"NeonHomer" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> I have a Linksys BEFW11s4 router that needs a couple of IC's replaced
> in it. I need someone who has one of these units that is dead or knows
> the #'s of the following IC's on the board (these IC's are located
> down by the LED's on the board)
>
> U10 (Might be a 74HCT123D)
> U11 74HCT125D
> U12
> U13 74F08
> U14 74HCT04D
> U15 74HC14D
> U16 74F74
> U17
>
> These are the part #'s I have. If anyone can help me out, I would
> GREATLY appreicate it!!!!
>
> NeonHomer

Just curious. How did you fry it?

bob alston


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On Tue, 20 Jul 2004 23:54:33 -0400, NeonHomer
<(E-Mail Removed)> wrote:

>I have a Linksys BEFW11s4 router that needs a couple of IC's replaced
>in it. I need someone who has one of these units that is dead or knows
>the #'s of the following IC's on the board (these IC's are located
>down by the LED's on the board)
>
>U10 (Might be a 74HCT123D)
>U11 74HCT125D
>U12
>U13 74F08
>U14 74HCT04D
>U15 74HC14D
>U16 74F74
>U17

If you fried all the aformentioned, you might as well give up.
They're all surface mount devices and will require precision, a
microscope, a steady hand, and either a fancy desoldering station or
lots of good luck to avoid peeling traces on the circuit board. I've
done quite a bit of SMT removal and replacment and would not recommend
it for beginners.

However, I enjoy heroics and martyrdom in the name of Learn By
Destroying(tm), so I'll try to be helpful. First, you need to
determine which mutation of BEFW11S4 you have. It should be scribbled
on the bottom of the case. Next, get the FCCID number. My BEFW11S4
v4 is PKW-BEFW11S4V4 as also inscribed on bottom of the case.

Now go to:
https://gullfoss2.fcc.gov/prod/oet/c...ericSearch.cfm
and fill in the first two boxes with the FCCID. Click "search".
You will find that it returns nothing. That's because the FCC's
multiple search engines are once again broken. Looking for a
workaround, I find that at least the company part of the FCCID is
working today. Inscribe the PWK in the company box, scroll down to
the bottom of the page, inscribe "show 70 records at a time", and hit
start search. Leave the product code box empty.

You'll get a list of everything that Linksys/Cisco has type certified.
The BEFW11S4V4 is about half way down the list. Under "details",
you'll find block diagrams, photos, and sometimes a schematic. Well,
not this time. They even obscured the chip numbers on the internal
photos. Oh well. Judgeing by the longer list of parts, your BEFW11S4
may be a different mutation. Dig around and you might be able to find
something useful.

Also, most of the parts you've listed are available through Digikey
and Mouser or can be squeezed out of distributors as samples.

So, what are the symptoms and what did you do to kill the router? If
it's comatose, the problem may not be router. I've had dead wall
warts, badly flashed firmware, and flakey power connectors, cause
problem.


--
Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 AE6KS 831-336-2558