McIntosh mp 100 Phone Preamp Problem.... Blinking Red Power Button

Hello all,

Appreciate any potential help... I'm a little dismayed... 

I was testing out RCA interconnects on my McIntosh MP 100 preamp, and suddenly the green faceplate starts blinking about every second. After maybe a few minutes of this, just the reg light around the power button blinks about every second. 

No more power on! 

I looked into the manual, and I didn't find anything that would help. Any suggestions? Did I blow a fuse? Did I somehow kill my McIntosh mp 100 phono preamp?

Thanks

Richard