My Sipura SPA 2000 SIP ATA adapter just died after 6-7 years of continous operation.
The LED would turn on when plugged in, but the Ethernet never came up, and would never light up the LED on the switch.
Searching on the Internet, I figured out that it was likely the PSU going dead (The electrolyte in the capacitors will waporize over time). Tested with a 5V 1A PSU I had for use with a powered USB HUB, and the SPA2000 worked fine again, but the PSU got too warm for my taste. Found a 5V 2A PSU in a box, and everything is now running fine again.
I ordered a new 5V 2A PSU from China via eBay.com. $3 including shipping.
Cheap fix for a product I almost thought was dead. So remember, if things has worked a long time and stops working, it might just be capacitors having reached their expected lifetime.
