I have four systems; each system is configured with a Cerberus v1.1, ENC28 v1.1 and a USBClientDP v1.3 module. The systems have been connected to a network and running for a month and all of a sudden the USBClientDP modules LED started blinking on two of the systems. After narrowing it down I found that if I unplug the ENC28 the USBClientDP LED will stop blinking indicating that it isn’t trying to source too much current.
I have not had power problems with these units before and all of a sudden they fail. I’ve even removed the network cable from the ENC28 and it still fails. I’ve tried two different power supplies and get the same results. The spec’s on the two supplies are: 12v 1amp and 15v 4 amp.
If I unplug the two systems, let them cool off, and then power them up again they will run for about 5 minutes and start failing.
What is going on here? It looks like the ENC28’s have failed, but I have no way of knowing other than when unplugged the system starts working again.