Basically, it's gone kaput. Tested with a friend's, and it's definitely the adapter, not the dvr station, so hopefully will be cheaper to get a replacment. Not really bothered if it's a generic model or an official one - cheapest answers on a postcard please:)
Current adapter is:
Input: 100V-240V ~ 50-60Hz/0.3A
Output: 5.2V - 2A
As already said, any help would be greatly appreciated.