Diagnosis
No power reaching the main control board. Likely a failed internal fuse or a bad power cord connection.
How to Fix It
Unplug it. Check the power cord where it enters the chassis for any damage. Plug it into a different, known-good wall outlet. If still dead, the issue is internal.
If That Didn't Work
The primary failure point is the 3A 250V fuse on the main PCB. You must disassemble the cabinet to access the board and check it with a multimeter. A blown fuse often means a larger board component failed.
Heads Up
This unit has no user-serviceable fuse on the outside. Do not bypass any fuses. You risk fire or shock opening the chassis if not qualified.