instument cluster

Morning All, Started the car this morning to discover; no instrucment cluster at all, no background lighting, no speedo, revs, fuel gauge, computer display. No high beams except if I flash stick manually. No indicators at all, not even through parking lights. Radio works but not through...

The Cluster 15 amp fuse has blown twice and I don't know how to start looking for a fault. Is it a case of taking my SL320 into a dealer for a full check over, or even a replacement cluster? The only work I have done to my car on the day the fuse first blew, was replacing the front brake pads...