My C800 recently stopped working of ac power.  The power supply light goes off when plugged into the receptacle.  The unit works fine on battery power.  I pulled the MB and check the plug connection and found no broken solder connection or cracks in the MB at the socket.  I pulled the dc power board and plugged the AC adapter back in and the power light on the adapter stayed on, and when I reinstalled the dc power board back in the adapter faulted again.  I believe this proved that there is not a break at the socket, since the adapter 'sees' the dc power board.

 

Has anyone experienced anything similar and am I going to be lucky enough to just have to replace the power board to recover?

 

Thanks for all replies.