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Linksys BEFSX41 Router

R

root

Jan 1, 1970
0
The router doesn't see the WAN connection. Is
there any hope that it is fixable?

I have reset it to initial status, and the
4xswitch side works.

TIA
 
M

Meat Plow

Jan 1, 1970
0
The router doesn't see the WAN connection. Is there any hope that it is
fixable?

Sub the router with a known working unit?
I have reset it to initial status, and the 4xswitch side works.

TIA

Only chance of repair is if you can positively ID the failed part and
find a replacement.
 
B

Baron

Jan 1, 1970
0
Meat Plow Inscribed thus:

Unfortunately that is quite a common problem. Often spikes on the
incoming line kill the circuit. You may find if your lucky that the
voltage arrester just behind the WAN socket is SC. Otherwise its just
usable as switch.
 
M

Meat Plow

Jan 1, 1970
0
Meat Plow Inscribed thus:


Unfortunately that is quite a common problem. Often spikes on the
incoming line kill the circuit. You may find if your lucky that the
voltage arrester just behind the WAN socket is SC. Otherwise its just
usable as switch.

What's your source for the common problem? The WAN connection usually
ends up on the Ethernet connection of a DSL or Cable modem which itself
should be protected. This can be verified by attaching the PC directly to
the WAN connection and trying to ping the modem's default IP address for
HTTP port configuration or trying to go to the modem config page at that
address.
 
P

PeterD

Jan 1, 1970
0
What's your source for the common problem? The WAN connection usually
ends up on the Ethernet connection of a DSL or Cable modem which itself
should be protected. This can be verified by attaching the PC directly to
the WAN connection and trying to ping the modem's default IP address for
HTTP port configuration or trying to go to the modem config page at that
address.

It happens. To me it was a nearby lightning strike that took out a
bunch of stuff. Didn't phase the DSL modem, but blew the Cisco
firewall and a switch behind it. Switches further down the stream were
untouched as well.
 
B

baron

Jan 1, 1970
0
Meat Plow Inscribed thus:
What's your source for the common problem? The WAN connection usually
ends up on the Ethernet connection of a DSL or Cable modem which
itself should be protected. This can be verified by attaching the PC
directly to the WAN connection and trying to ping the modem's default
IP address for HTTP port configuration or trying to go to the modem
config page at that address.

My bad ! :-(
I forget that here in the UK the router normally connects directly to
the phone line and over there the modem is often a separate device.
Sorry !

Although the protection circuitry behind the socket is still worth
checking.
 
S

Steve Sousa

Jan 1, 1970
0
root said:
The router doesn't see the WAN connection. Is
there any hope that it is fixable?

I have reset it to initial status, and the
4xswitch side works.

TIA

had a befsr41 go bad after a power surge. the caps inside heat like crazy
in normal operation and go bad too, but in my case it was also the wan chip
(realtek?). i found one online and replaced it. at the time it made sense in
terms of cost, nowadays probably not...
 
M

Meat Plow

Jan 1, 1970
0
Meat Plow Inscribed thus:

My bad ! :-(
I forget that here in the UK the router normally connects directly to
the phone line and over there the modem is often a separate device.
Sorry !

The telco here offers a combo switch/router/dsl modem. I have one around
here made by 2wire.
Although the protection circuitry behind the socket is still worth
checking.

If the OP is adventurous yes. However it may not be worth the money to
replace parts and if the protection has crowbarred the WAN port running
the router without protection could result in future damage to the
transceiver.
 
B

Baron

Jan 1, 1970
0
Meat Plow Inscribed thus:
The telco here offers a combo switch/router/dsl modem. I have one
around here made by 2wire.


If the OP is adventurous yes. However it may not be worth the money to
replace parts and if the protection has crowbarred the WAN port
running the router without protection could result in future damage to
the transceiver.

True ! Though spark gaps and TVS diodes are commonly used for
protection.

Oddly I got one to fix just after my last post. TVS diode dead short.
Lift the diode and it works again. New diode needed.
Problem ! House coded. A PKE170 is the same physical size and should
do.
 
M

Meat Plow

Jan 1, 1970
0
Meat Plow Inscribed thus:

True ! Though spark gaps and TVS diodes are commonly used for
protection.

Oddly I got one to fix just after my last post. TVS diode dead short.
Lift the diode and it works again. New diode needed. Problem ! House
coded. A PKE170 is the same physical size and should do.

I've never had to or been called to repair these things. Last damaged
Ethernet device I encountered was a 24 port Cisco Catalyst series managed
10/100 switch that had suffered a proximity lightning strike knocking out
several ports. It was replaced, no way I would tackle a repair.
 
B

baron

Jan 1, 1970
0
Meat Plow Inscribed thus:
I've never had to or been called to repair these things. Last damaged
Ethernet device I encountered was a 24 port Cisco Catalyst series
managed 10/100 switch that had suffered a proximity lightning strike
knocking out several ports. It was replaced, no way I would tackle a
repair.

Generally speaking they aren't worth the time to take the box apart let
alone fault finding on them. But as part of a larger job it can become
worth the effort to do so ! It also marks you out as someone who can
be trusted to do a job properly rather than box shift or bodge. In any
case its all part of a continuous learning process.
 
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