Rep Power: 0

I have a sony xplod 1000 watt amp, Hooked up to 2 12"s, It worked PERFECT for about a month ( I bought it used) I have everything wired right, Power light always stays green and never dims. But, Until today the bass just stopped. ( But the power light was still on) And then about 40 minutes later, my subs came back on, Then off, Then on. ect. I really want to fix this for it is very annoying and frustrating. any ideas? Please help.