Dead network port

You might want to take the Mac in for service if the ethernet port is not responding.

Has the operating system been reinstalled recently?

Hi Jabba,

to check an ethernet port on a Mac running Panther (10.3) or Tiger (10.4)

a. click to far upper left of screen/Apple icon/System Prefs/Network

b. in resulting window, on Show pop-up menu at top of Network pane, click to Network Port configurations

c. verify in resulting window that Built-in Ethernet is an entry
and that its box is checked

d. Built-in Ethernet should be the first entry, meaning it should be displayed at the top of the small window it lives in, if not drag and drop it to the top
if needed click Apply Now, this button turns to 'greyed-out'

click Show menu again, choose Built-In Ethernet

verify the GUI shows a 5 tab motif along the top
verify the TCPIP tab is selected

verify you can see an entry at the IPv6: field ala
"fe80:0000:0000:0000:0211:24xx:dhd0:76cc"

d. pull the RJ-45 cable off the Mac, in about 6 seconds or less this entry in step C above should disappear

insert the RJ-45 cable back into the Mac, in 1 or 2 seconds the field should repopulate with an entry

If problem not resolved then:
reinstall OS and recheck steps above

If problem still not resolved then:
acquire AHT disk (if you dont already have it)
run AHT in 'extended mode' several times
if AHT passes quick and extended checks, bad hdwe likely


Hope this helps

Best,

Chris Chamberlain

sorry, got a few typos in my post

a. step d should be step e

b. step d references an item as if it were in step c, s/b step d as well

sorry for the confusion