After much googling and research I believe I have a theory on the condition that causes the network cards to fail/lockup.
The reported issue common to many posters on avsforum, after a power outage, or after a power bounce "power cuts out
and back on real fast" or after pressing on and then off real fast as the receiver is booting is the start of
the network problem.
The sympton after this happens is that the user cannot access the receivers web
management page. However, pings work and respond and users can telnet to port 5001 on the network card.
Users report nics with gold traces are replaced with nics with green insulated traces and having the nics
changed resolves the issue
some users have recovered without changing the nic out and others not.
one user reported that after booting going straight to the config menu without changing inputs and
switching his network standby from on to off restores network connectivty.
another user xczar reported that his completely locked up and upon power reset "small botton, not the standby button" his came back up in this post # 2831 of this thread
dMarca post number 2693 said - whenever I turned to Net/USB, I got the dreaded "Please wait... AssigningNetwork" message forever and ever. It only went away when I put the AVR on standy (by hitting the ON/STANDBY button), then turned it off completely (by hitting the ON/OFF button). Upon turning it back on, I got everything back to normal
I personally had the same thing happen to me this weekend on my avr-4810ci. either from some prior power outages the week before or from me rapidly powering up zone2 on and off again in succession to test some macros I created on my remote I ended up losing the web management page. I could ping the receiver just fine, but the web interface would not come up, nor could I execute commands via telnet. Standby off and on did not bring the nic back. nor did quick plug removal.
I was on the latest firmware prior to the rhapsody server disable/renable firmwares.
I was able to successfully get my denon network management page back by physically removing the power to my receiver after it locked up on the network connecting menu. physically removing the power to my router and switch, reseating network cables into switch/router. plugging back in the switch/router. then finally plugging receiver back in and
by pressing small power switch "not the standby one" on the front. I pressed it in to put it in the off position and then back on to put it in the on position.
After that my network came back up and everything has been fine since. I never had standby on, I use dhcp reservation for the ip and I have the green insulated
nic card. After it came back up i successfully applied the latest firmware with the new rhapsody server as I was only current to the firmware right before it.
I've powered up and down a dozen times
since this weekend and it appears to be ok.
So theory is quick power on and then off or when the card boots on the NET/USB device and gets stuck on assigningnetwork results in this condition of the network card locking up and becoming unresponsive to ports 23/80/5000. 5001 is responsive but just sits at a # prompt via telnet connection.
Can one recover from this condition? in my isolated case it appears I did, but is recovery only available if you are on a recent firmware version AND/OR have the green insulated nic? Will recovery last long term?
References below from various threads
across the denon lines
xczar in the avr-4810ci thread post number post # 2831 in the avr-4810ci thread.
dMarca in the avr-4810ci thread post number 2693 in the avr-4810ci thread.
mrocca posted this on the avr-4810ci in post number 3594 and 3650http://www.avsforum.com/avs-vb/showt...60117&page=120
lynniemagoo post # 3649 and post # 3650http://www.avsforum.com/avs-vb/showt...1#post20300981
chabor post #3443 avr-4810ci spreadhttp://www.avsforum.com/avs-vb/showt...5#post19555295
phenigma posted on 3-15-11 inhttp://www.avsforum.com/avs-vb/showthread.php?t=1300240
I have a 3311CI that has been working great for 3 months. The other day my finger slipped I accidentally
hit the 'off' button on the remote immediately after pressing the 'on' button. The receiver turn on then
off. When I turned the receiver back on I had no network connectivity.
My router gives an IP to the receiver still but the receiver shows no MAC address and none of the 'network'
menus or features are accessible or working. I have tried to reset my unit a few times with no success in
restoring network functionality. I am extremely disappointed as I use the network connection for Home
Automation control and interface (same as the rs232 control but over IP).
I'm off to deliver my receiver to an authorized repair centre 2 hours away. They say it will be covered
under warranty if I bring my original sales receipt. They also say it will likely take at least a week
before they will even look at it and then another week before they would probably fix it. Crappy timelines,
but if it's covered under warranty I'll take it.
Author : proudx
Date : 08-05-11 11:39 PM
Some of the circuit board traces were changed from exposed metallic gold to insulated green. A sticker with some QC markers.
Here is a link to a quick video I made of the install. Sorry for the shake and blur...http://www.youtube.com/watch?v=dNxRJon5WrI
Reading though the AVR-4310 thread "the avr-4310 uses the bridgeco DM860 nic, similar, but not the same" They have come to the same conclusion. The updated working nic is the one with green insulation.
The metallic gold signifies the old card.