We don't know, will it turn on without having anything hooked up to it?
If it does, the first thing that you should do is check for significant DC voltage across each pair of speaker terminals. Less DC, or closer to zero is better, but idealy it should be significantly less than 200mVDC.
If it does, the first thing that you should do is check for significant DC voltage across each pair of speaker terminals. Less DC, or closer to zero is better, but idealy it should be significantly less than 200mVDC.