More and more IBOX backers on indiegogo have received the product and have begun to use it, and they also provide various feedback.
Ethernet failure issue is the most frequently mentioned. At first, we are not able to figure out what the matter is, so we asked the customers to return the defective IBOXs so that we can send them new ones. Now, we have received two IBOXs with Ethernet failures, and we have found the cause of this issue after failure analysis and repair.
The Ethernet failure is caused by an instable resetting circuit on the baseboard, which resulted from a poor-quality capacitor in the resetting circuit, and sometimes the resetting circuit does not work properly.
Fault phenomenon :
Ethernet can not have access to the network, LED indicator on Ethernet interface only flashes once when powering up and then it does not flash any more.
Capacitor in the resetting circuit has quality problems, thus the resetting level time cannot can not meet the needs for resetting the system, and the Ethernet chip cannot work properly due to unsuccessful resetting.
Replace C8 on the PCB with a 2.2uF 0603-packaged chip capacitor, the position is shown as below:
If you can replace the faulty capacitor by yourself, it would be the fastest approach to solve the problem. Of course, it is not easy to replace a chip unless you're a hardware engineer, so we would like to offer a new IBOX baseboard for free for those who encounter such issue.
If you were unlucky to receive IBOX with Ethernet fault, please send e-mail to (ivy.long @ itead.cc), and we will send you a new baseboard. After receiving the new baseboard, you only need to open the aluminum case, remove the old baseboard from ITEAD A20 Core and then replace it with the new one. You do not need to return the old baseboard to us.