Thread: dm500s network issue - led blinking constantly

I know this is pretty stupid to say, but did you check that the network is "enabled" in the communication setup. Nah! nobody is as stupid as me, spending ages to find that out.

I also noticed some posts on another site, reporting hardware errors in comms, with no resolution, except to say the "board was blown".

of course yes!!!

In fact, sometimes, the network works but few minutes after, network test fails and one of the network led is blinking every second.
I made some tests with another DM500s on the same network cable, I have no issue; every thing is ok.

I suspect a real hardware issue.

Thanks

Yes, I flashed several times with different images.

I try again with the last gemini image 4.7 but that does not do the trick :-(

So I put my db with fix IP and I tested ping from PC.
Here are the results :
Pinging 192.168.0.23 with 32 bytes of data:

Request timed out.
Request timed out.
Reply from 192.168.0.23: bytes=32 time=2ms TTL=128
Reply from 192.168.0.23: bytes=32 time<1ms TTL=128
Request timed out.
Reply from 192.168.0.23: bytes=32 time<1ms TTL=128
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.0.23: bytes=32 time<1ms TTL=128
Reply from 192.168.0.23: bytes=32 time<1ms TTL=128
Reply from 192.168.0.23: bytes=32 time<1ms TTL=128
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.0.23: bytes=32 time<1ms TTL=128
Request timed out.

The network is unstable.

But when I put the another DB on the same network cable, I have no issue

Any idea ?

talk to member cwispy theres some other parts causing fault like this

Zakourou,

can you supply more information regarding your network?

this may help other members to assist you.

cheers
hannible

OK :

My network is very simple :
DB is connected direct to a netgear switch 10/100BT which is connect to wifi ADSL Router.

I tried to connect only DB on the switch with no other device. But it changed nothing.

My PC is connected by wifi to the ADSL Router.

Another time, I tried with other DB, it worked fine. So, I don't think the issue come from the network.

I'll try to contact cwispy

I finaly found the solution.
After the RJ45 connector, there is a chip pulse H1102 to protect the asix ic. I think it was defected.
So, I bypassed this chip linking the RJ45 tx & rx pins to rd & td pins of asix directly.
Now, it works fine.
Thanks for all

good work, another new problem discovered, well done.

Originally Posted by zakourou

I finaly found the solution.
After the RJ45 connector, there is a chip pulse H1102 to protect the asix ic. I think it was defected.
So, I bypassed this chip linking the RJ45 tx & rx pins to rd & td pins of asix directly.
Now, it works fine.
Thanks for all

i have the same problem.! can you give me more information please...! how can i fix that... any photo...?

rgs