Right Channel: [Powered by Yamaha Receiver]
I have a mono Marantz MA500U amp connected to the left speaker via the left preamp output channel on the Receiver.

Left Channel: [Powered by Marantz mono block amp]
I have the right speaker connected to the left channel output on the back of the Yamaha Receiver.

So basically I am powering the right channel by the monoblock and the left channel by the Yamaha's built in amplification.

Ok, So the Marantz Mono Block amp for the left channel was really loud so to listen to music on level volume I had to turn the balance on the Yamaha Receiver to mostly right channel.

I was jammin... I cant wait to get another MA500U Marantz mono block for hte right channel. Anyways.... after about 2 hrs of loud music the right channel just cut off.
I let it cool down, this morning I turned on the Yamaha and still no right channel. I checked wires in back and they are securely connected.

Did I blow a circuit or fuse inside the Yamaha Receiver for the right channel?


Setup:
Oppo DV980H DVD/CD Music Player
2X Cerwin Vega VS-12 Speakers
1X Marantz Monoblock MA500U amplifier (Saving for another one)
Yamaha RX-V995 Natural Sound Receiver