Here is a super easy “how to” video from Cisco on how to change the Cisco2911 Power Supply. All while the unit is running is RPS mode. Below is the Cisco 2911 – Power Supply Replacement technique.
Cisco 2900 Series Integrated Services Routers
http://www.icpnetworks.co.uk/cisco/2900-series-integrated-services-routers.asp
If we @ ICPNetworks.co.uk can answer any questions or help in any way please feel free to let us know.
🙂 thanks from the Team @ ICP