Primare SPA 23 power problem ...

Upon turning on my Primare SPA 23, the "Warming Up" light continuously beams but the unit does not complete the warm up sequence so as to be useable.
Is this a fuse problem, I am wondering. If so, how do I fix it. I do not see any repair manuals online. I would be grateful for some guidance.
 
According to the design brief, this is a large class D, 5.1 channel home theatre amplifier - not that old, either. Really, I would not fiddle with this monster and simply take it to a competent repair technician because you wont be able to analyse or solve a thermal sense problem like that, simply by changing power fuses. If you have already completed any user guide to fault finding, I would stop right there.