Label is S700 but inputw and outputs are for 7.1. But htere have never worked right until I changed rear and side output to side speakers and use them as rears. the sound is great but it is not working at all now. Are there fuses to be replaced? First problem was on-off button on power supply would not turhn off. Replaced it from another power supply and it still doesn't workd right. I need a circuit diagram to get it right.