Dead Ethernet port on DM7020

habib2535 · Oct 13, 2007

I am not expecting miracles from this post but may be this effort will bring me some luck. I have a simple story to tell : I bought a DM7020 from e**y from a German guy but the box has a strong defect : the ethernet port is dead !

I tried many manipulations so far including : static ip vs dhcp, direct DM to PC connection using a working crossover cable (even trying different cables there), HuperTerm method to force IP and speed, multiple DreamUp flashed images, I even tried different hub routers, etc., etc.... but same result : no way to wake up the ethernet port.

My questions are :
1. Is there another way of connecting a DM to the internet other than using the Ethernet port (I doubt) ?
2. What method should I use to fix the problem other than buying a new DM7020 or changing the entire mother board ?
3. Is there any specialised forum, website or even DM repair-shop (in France) that can handle this with reasonable budget (please pm me any useful link)

Thanks to help get out of this "trap" !

PS : I already have another DM7000 since 3 years using all networking methods and tools : routers, DCC, FWP, dyndns, samba, CCcam, Gbox, etc.... So I am a pretty advanced DM/LAN/WAN user but unfortunately not an electronic expert !

habib2535 · Oct 14, 2007

I should add that I can see sometimes the Led lighting up in my router (actually depending on which slot I use) but that's it : no ping - no traffic - no browser access - no DCC access etc... just a DEAD PORT

The only other indication I should add is that the device had a Power supply problem : I had to open the box and twist the power supply board slightly to have the Dreambox able to boot. Could it be that the Ethernet chipset (AX88796) is poorly powered ? All other functions of the box are working fine (USB, Tuner, OSD display, null modem access with DreamUp, TV scart, CI Slot, ...)

Rocknroll · Oct 15, 2007

You most probably need an experienced electrician to take a look at it. I sent a person who helped me with similar problem an email with a link to this thread, maybe he can help if he finds time, I am sure he is busy. But he was very kind to fix my dm7000, my network died due to a power surge.

habib2535 · Oct 15, 2007

Please thank this person on my behalf... i would really appreciate... i was trapped like an idiot by an e**y seller who recycled a broken DM on the market (without telling the pb) instead of trying to fix it first... Anyway !!!!

jim42 · Oct 17, 2007

Etehernet problem in 7020

Hi

I'm the person who fixed Rockandrolls 7000.
I have also 7020 of my own. If you come to point where LAN circuit is suspected to defective you can send it to me.
I'm living in Finland, so it takes some postage fees (around 25€ for both directions) but I'm willing to try if you do not find a local guy who can change the circuit. The excessive heat might distroy crystal of LAN Circuit. And it will degrade copper folies of PCB.

Please send me a private Message so we can discuss about details

habib2535 · Oct 20, 2007

Sorry I was in a business trip... Just returned... I will contact you through pm

jim42 · Oct 21, 2007

habib2535 said:
Sorry I was in a business trip... Just returned... I will contact you through pm

OK No problem. Maybe this is my third message on this board, so I can start now to PM you also.

habib2535 · Oct 21, 2007

I have been told in anothor forum that because, when I boot my box, the IP address is displayed on the LCD, this means that Ethernet chip is not harmed.

Does this information of "IP address display" mean anything to help on the diagnosis ? Note that I am even able to change this IP address with HyperTerm method using the serial port

habib2535 · Nov 3, 2007

Ok I have new development here... by putting more finger pressure in the middle of the power supply board, the DM assigned LED in the router lights up indicating a connection ... however "pinging" is not possible

I tried to connect to DM from the router itself (test routine) and also from DCC on PC : No reply but...

using DreamUp, the tool was able to establish a connection with the DM and even to "declare a positive ping !". But when I try to flash with an image it "aborts" ...being unable to handshake with the box

It seems now to me 95% clear it is a Power Supply problem but how could a LED lightens up on a router without IP connection possible ?

habib2535 · Aug 4, 2008

I tried to open the motherboard and resolder the Ethernet port pins. I also added/tested the 2 capacitors boosting trick... None of these is changing the situation.

Now I decided to drop the ethernet port route and see if i can get Internet into the Dreambox through the USB port. Is there anyone who has a working configuration of wireless internet through USB on a DM7020 ? please indicate the used config : what kernal ? what image ? what wifi driver ? and what USB wifi stick ? (...although I found a list of 802.11b working USb wifi adaptors)

Thanks...