Sony Xplod Amps

I have 2 1200w Sony amps. Both amps went out/turned off about a year ago. Couldn't diagnose problem, removed subs and amps. Have tried twice now to re-install. Each time I hook the amp up(no speakers attached) the amps will come on. I then cut power to the vehicle, hook subs up. Results in no power to the amps. System worked fine for well over 2 years.

Components of System:

Pioneer Deck
2 Sony Xplode Subs
2 Caps
Distribution block with fuses

I just dont understand!!!! Please help!

the led lights work off of the remote lead not the power lead. Make sure the power wire from the battery and the gnd wire are good. may also be that one or both of the subs are blown.